Updated on 2025/09/30

写真a

 
HIRAI Yoshihiko
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Professor
Position
Professor
External link

Degree

  • 博士(農学) ( 岡山大学 )

Research Interests

  • ダイズ

  • 耐塩性

  • 作物

  • イネ

Research Areas

  • Environmental Science/Agriculture Science / Crop production science

Research History

  • 岡山大学大学院環境生命科学研究科   教授

    2022.4

      More details

  • 岡山大学 グローバル人材育成院   教授

    2020.4 - 2022.3

      More details

  • Okayama University   The Graduate School of Environmental and Life Science   Professor

    2019.10 - 2020.3

      More details

  • Okayama University   The Graduate School of Environmental and Life Science

    2012.4 - 2019.9

      More details

  • Australian Centre for Plant Functional Genomics

    2007.5 - 2008.3

      More details

  • Okayama University   The Graduate School of Natural Science and Technology

    2005.4 - 2012.3

      More details

  • Okayama University   Faculty of Agriculture

    2004.4 - 2005.3

      More details

  • Okayama University   Faculty of Agriculture

    1994.5 - 2004.3

      More details

▼display all

Professional Memberships

Committee Memberships

  • 日本作物学会中国支部   庶務幹事  

    2018.10   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会中国支部   幹事  

    2018.10   

      More details

  • 日本作物学会   和文誌編集委員会委員  

    2018.4   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会   レビュー委員会委員  

    2010.4 - 2012.3   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会   学会賞選考委員会幹事  

    2008.4 - 2010.3   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会中国支部   編集委員  

    2006.10 - 2018.9   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会   庶務幹事(B)  

    2004.4 - 2006.3   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会中国支部   編集幹事  

    2000.10 - 2006.9   

      More details

    Committee type:Academic society

    researchmap

  • 日本作物学会   編集委員会B幹事  

    2000.4 - 2002.3   

      More details

    Committee type:Academic society

    researchmap

▼display all

 

Papers

  • Involvement of reactive carbonyl species in inhibition of germination and seedling growth by salt stress in rice Invited

    Faruk Hossain Khan, Yoshitaka Nakashima, Toshiyuki Nakamura, Yoshimasa Nakamura, Yoshihiko Hirai, Md Anamul Hoque, Mohammad Saidur Rhaman, Shintaro Munemasa, Jun'ichi Mano, Yoshiyuki Murata

    Bioscience, Biotechnology, and Biochemistry   2025.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1093/bbb/zbaf062

    researchmap

  • Effects of water use efficiency on plant dry matter in NERICA and Japanese rice cultivars under drought conditions Reviewed

    N T T H Hien, H Yamanaka, T Kobata, Y Hirai, K Saitoh

    IOP Conference Series: Earth and Environmental Science   1155 ( 1 )   012004 - 012004   2023.3

     More details

    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:IOP Publishing  

    Abstract

    NERICA (New Rice for Africa) was produced by crossing Asian rice (Oryza sativa L.) and African rice (Oryza glaberrima Steud.) and recorded to be drought tolerance. This study aimed to examine the transpiration and water use efficiency affected plant aboveground dry matter in total 29 cultivars including 23 NERICA, 1 indica-type and 5 japonica-type cultivars. Seedlings were transplanted 2 plants per pot (1/5000 a Wagner pot) on June 14, 2021. When the flag leaf appeared, three water treatments with three replications were imposed for 14 days. The control plot (C) was watered daily to maintain the water content per pot at field capacity (SW). The water content of medium dry pots (MD) and hard dry pots (HD) were maintained at 40% and 10% of SW, respectively. Surface of the pots was covered to eliminate the evaporation. Samples for dry matter measurement were collected on the same day starting and ending water treatment. Water use efficiency (WUE) was significantly different among cultivars when soil moisture treatments were included, and the same observation on soil moisture treatments when included cultivars. NERICA 4 showed the lowest WUE while NERICA 9 and Hokuriku 193 had the highest WUE. Cultivars with higher transpiration rate (Tr) had higher dry matter production (ΔDW). Under high vapor pressure deficit, ΔDW was more correlated with transpiration corrected by vapor pressure deficit (Tr/VD) than with WUE.

    DOI: 10.1088/1755-1315/1155/1/012004

    researchmap

    Other Link: https://iopscience.iop.org/article/10.1088/1755-1315/1155/1/012004/pdf

  • Cadmium uptake via apoplastic bypass flow in Oryza sativa Reviewed

    Izumi C. Mori, Carlos Raul Arias-Barreiro, Lia Ooi, Nam-Hee Lee, Muhammad Abdus Sobahan, Yoshimasa Nakamura, Yoshihiko Hirai, Yoshiyuki Murata

    JOURNAL OF PLANT RESEARCH   134 ( 5 )   1139 - 1148   2021.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s10265-021-01319-y

    Web of Science

    researchmap

  • Identification and Validation of QTLs for Yield and Yield Components under Long-Term Salt Stress Using IR64 CSSLs in the Genetic Background of Koshihikari and Their Backcross Progenies Reviewed

    Nguyen Sao Mai, Dao Duy Hanh, Mai Nakashima, Kotaro Kumamoto, Nguyen Thi Thu Thuy, Tohru Kobata, Kuniyuki Saitoh, Yoshihiko Hirai

    AGRICULTURE-BASEL   11 ( 8 )   2021.8

     More details

    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/agriculture11080777

    Web of Science

    researchmap

  • Identification and characterization of chromosome regions associated with salinity tolerance in rice. Reviewed

    Thuy N.T.T, Tokuyasu M, Mai N.S, Hirai Y

    Journal of Agricultural Science   10 ( 11 )   57 - 68   2018

     More details

    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    researchmap

  • Cl− more detrimental than Na+ in rice under long-term saline conditions. Reviewed

    Dao H.D, Hirai Y

    Journal of Agricultural Science   10 ( 10 )   66 - 75   2018

     More details

    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    researchmap

  • The effects of irrigation method and seedling age at transplanting on the growth and yield of rice grown on heterogeneous saline soils Reviewed

    Takahiro Kakehashi, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   85 ( 2 )   115 - 121   2016.4

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Crop Science Society of Japan  

    DOI: 10.1626/jcs.85.115

    Scopus

    J-GLOBAL

    researchmap

  • Good and bad protons: genetic aspects of acidity stress responses in plants Reviewed

    Yuri Shavrukov, Yoshihiko Hirai

    JOURNAL OF EXPERIMENTAL BOTANY   67 ( 1 )   15 - 30   2016.1

     More details

  • Effects of Soil Ball Application of Phosphorous on Dry Matter Production and Plant P content in Rice (Oryza stiva L.) under Upland Conditions

    Tsuda Makoto, Kakiya Naomi, Hirai Yoshihiko

    Abstracts of Meeting of the CSSJ   240   44 - 44   2015

     More details

    Language:Japanese   Publisher:CROP SCIENCE SOCIETY OF JAPAN  

    DOI: 10.14829/jcsproc.240.0_44

    CiNii Article

    researchmap

  • Process of Cracking in Seed Coat around Radicle of Soybean Cultivar ‘Sachiyutaka’

    Hirai Yoshihiko, Tamai Kohei, Tsuda Makoto

    Abstracts of Meeting of the CSSJ   240   79 - 79   2015

     More details

    Language:Japanese   Publisher:CROP SCIENCE SOCIETY OF JAPAN  

    DOI: 10.14829/jcsproc.240.0_79

    CiNii Article

    researchmap

  • Advance in measurements of respiration in crops Reviewed

    Yoshihiko Hirai

    Japanese Journal of Crop Science   84 ( 2 )   224 - 229   2015

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Crop Science Society of Japan  

    DOI: 10.1626/jcs.84.224

    Scopus

    J-GLOBAL

    researchmap

  • Water use and growth of rice (Oryza sativa L.) cultivated on saline soils with various amounts of soil and water Reviewed

    Haburi, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   83 ( 1 )   32 - 38   2014

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.83.32

    Scopus

    J-GLOBAL

    researchmap

  • Effects of Exogenous Proline and Glycinebetaine on the Salt Tolerance of Rice Cultivars Reviewed

    Muhammad Abdus Sobahan, Nasima Akter, Misao Ohno, Eiji Okuma, Yoshihiko Hirai, Izumi C. Mori, Yoshimasa Nakamura, Yoshiyuki Murata

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   76 ( 8 )   1568 - 1570   2012.8

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1271/bbb.120233

    Web of Science

    researchmap

  • Water Use in Wheat and Barley Grown on Saline Soils Reviewed

    Haburi, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   81 ( 1 )   64 - 70   2012

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.81.64

    Scopus

    J-GLOBAL

    researchmap

  • Effects of fertilization at flowering stage and environmental condition during seed-filling stage on soybean seed coat cracking of different types Reviewed

    Yoshihiko Hirai, Hiroshi Tsushima, Makoto Tsuda

    Japanese Journal of Crop Science   80 ( 2 )   183 - 189   2011.4

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.80.183

    Scopus

    J-GLOBAL

    researchmap

  • Effects of salinity on sodium accumulation in interspecific hybrid rice (NERICA) lines grown on different types of soil Reviewed

    Chiharu Sone, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   80 ( 3 )   333 - 340   2011

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.80.333

    Scopus

    J-GLOBAL

    researchmap

  • Effects of topdressing and benzyladenine application during seed filling on delayed stem senescence and the seed coat cracking in soybean

    HIRAI Yoshihiko, MATSUMOTO Nozomi, TSUSHIMA Hiroshi, TSUDA Makoto

    Abstracts of Meeting of the CSSJ   79   350 - 351   2010.9

     More details

    Language:Japanese   Publisher:CROP SCIENCE SOCIETY OF JAPAN  

    DOI: 10.14829/jcsproc.230.0.350.0

    CiNii Article

    CiNii Books

    researchmap

  • Effects of Top Dressing on Growth and Panicle Dry Weight as Affected by Soil Water Stress at the Early Panicle-Development Stage in Rice (Oryza sativa L.) Reviewed

    Makoto Tsuda, Masako Endo, Yoshihiko Hirai

    PLANT PRODUCTION SCIENCE   13 ( 1 )   37 - 44   2010.1

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/pps.13.37

    Web of Science

    researchmap

  • Varietal difference in the cost of dark respiration for panicle growth and carbohydrate mobilization Reviewed

    Yoshihiko Hirai, Kentaro Numa, Kiyohiro Nakai, Makoto Tsuda

    Japanese Journal of Crop Science   79 ( 1 )   53 - 61   2010

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.79.53

    Scopus

    J-GLOBAL

    researchmap

  • The salinity tolerance in an interspecific progeny NERICA 1 derived from the cross between O. sativa L. and O. glaberrima Steud Reviewed

    Chiharu Sone, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   79 ( 2 )   184 - 191   2010

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.79.184

    Scopus

    J-GLOBAL

    researchmap

  • Exogenous Proline and Glycinebetaine Suppress Apoplastic Flow to Reduce Na+ Uptake in Rice Seedlings Reviewed

    Muhammad Abdus Sobahan, Carlos Raul Arias, Eiji Okuma, Yasuaki Shimoishi, Yoshimasa Nakamura, Yoshihiko Hirai, Izumi C. Mori, Yoshiyuki Murata

    BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY   73 ( 9 )   2037 - 2042   2009.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1271/bbb.90244

    Web of Science

    researchmap

  • Increase in the water stress sensitivity at early panicle-development stage in rice under saline soil conditions Reviewed

    Jungang Wang, Makoto Tsuda, Yoshihiko Hirai

    Japanese Journal of Crop Science   76 ( 4 )   540 - 547   2007

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.76.540

    Scopus

    J-GLOBAL

    researchmap

  • Effects of nitrogen application on dry matter production and shoot Na concentration under saline conditions in rice

    Sone Chiharu, Tsuda Makoto, Hirai Yoshihiko

    Abstracts of Meeting of the CSSJ   222   154 - 154   2006

     More details

    Publisher:CROP SCIENCE SOCIETY OF JAPAN  

    DOI: 10.14829/jcsproc.222.0.154.0

    CiNii Article

    researchmap

  • Response of leaf temperature to soil water deficit in cashew (Anacardium occidentale L.) Seedlings. Reviewed

    Pitono, Joko, Tsuda, Makoto, Yoshihiko Hirai

    Japan Journal of Tropical Agriculture   49 ( 2 )   126 - 131   2005

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    The control of transpiration in cashew seedlings is important to enable them to cope with droughtprone environments. The response of the leaf temperature to soil water deficit, as an indicator of transpiration, was examined in 10 cashew strains from Indonesia. The seedlings were grown in 4.3 liter pots filled with soil for about 3 months, and irrigation was withheld from half of these pots to reduce the content of soil water, while the remaining pots were well-watered. During midday on sunny days, the leaf temperature of the well-watered plants and plants subjected to the soil water deficit was determined with a handheld infrared thermometer as well as the temperature of a wet filter paper and a dry leaf. Soil water content was also determined. Based on these data, the leaf temperature ratio (LTR) as a relative value of leaf transpiration to potential evaporation (wet filter paper) was calculated. In MDR and A3-1, LTR was smaller than in the other eight strains. LTR in the well-watered plants (LTR0) ranged from 0.74-0.87, and strains MDR and A3-1 showed a low LTR0. In these two strains, LTR decreased more sensitively in response to the decrease of the soil water content. These results indicate that MDR and A3-1 may conserve soil water better because their transpiration rate was low under both well-watered and drought conditions.

    DOI: 10.11248/jsta1957.49.126

    CiNii Article

    researchmap

  • Effect of shading on xylem vulnerability to dysfunction at the nursery stage in cashew (Anacardium occidentale L.) Reviewed

    Pitono, Joko, Tsuda, Makoto, Yoshihiko Hirai

    Japan Journal of Tropical Agriculture   48 ( 3 )   149 - 155   2004

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    The ability to maintain water continuity in the xylem under a low water potential (low vulnerability of xylem to dysfunction) is considered to be responsible for adaptation to drought in cashew. The effect of shading on the xylem vulnerability of cashew seedlings was evaluated since the plants are grown under shading at the nursery stage. A strain with a resistant xylem (A3-1) and two strains with a vulnerable xylem (G-85 and Wonogiri-2) were grown in an open field and under shading for four months, and then the xylem vulnerability was determined. In A3-1, the applied pressure that induced a 50% loss of hydraulic conductivity (P50), which was the indicator of xylem vulnerability, was 1.55 MPa in the open field and A3-1 was found to be less vulnerable than G-85 and Wonogiri-2 in which the P50 value was ca. 1.2 MPa. The vulnerability increased under shading in A3-1, whereas it was not affected by shading in G-85 and Wonogiri-2, resulting in the absence of difference in vulnerability among the strains under shading. Stem length/diameter ratio increased in the three strains under shading, indicating the existence of spindly growth. The degree of spindly growth was largest in A3-1 and the vessel diameter increased only in A3-1. It was considered that the fragile vessel wall and the increase in the vessel diameter associated with spindly growth was responsible for the increase in the vulnerability under shading in A3-1. These results suggested that it would be important to grow the seedlings of A3-1 which displayed a resistant xylem under shading without spindly growth.

    DOI: 10.11248/jsta1957.48.149

    CiNii Article

    researchmap

  • Relationship between xylem hydraulic properties and panicle characters in paddy and upland rice (Oryza sativa L.) Genotypes. Reviewed

    Tsuda, M, Takahashi, Y, Hirai, Y

    Japan Journal of Tropical Agriculture   48 ( 3 )   131 - 136   2004

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    The xylem hydraulic conductivity of the panicle neck is considered to be responsible for the maintenance of the panicle water status which is not under the stomatal control in rice. To clarify the hydraulic properties of the panicle neck, the water transport function of the panicle neck and panicle characters were examined in 12 paddy and 8 upland rice genotypes originating from various countries. The hydraulic conductivity (K) under full hydration increased with the increase in the number of spikelets per panicle (Ns), panicle area (Ap, projected area of a whole panicle which was considered to be an indicator of the evaporative surface) and the number of large vascular bundles of the panicle neck (Nb) in paddy rice. A large variation in K was also detected in upland rice, but not in Ns and Nb, and the relationships of K with Ns, Ap and Nb were not significant. On the other hand, there was a significant relationship between the diameter of the large xylem vessels and K in the paddy and upland rice genotypes. A positive relationship was found between K/Ap or K/Ns (ability of the xylem of the panicle neck to supply water per unit evaporative surface or to one spikelet) and the size of the spikelet (As, calculated as Ap/Ns) . Since upland rice has large spikelets, the value of K/Ap was higher in upland rice. The xylem became vulnerable as Ns increased in paddy and upland rice genotypes. These results suggested that upland rice was able to cope with dry environments not because of a less vulnerable xylem to dysfunction but due to the higher hydraulic conductivity of the xylem. The relationships found in this study may enable to estimate the hydraulic properties based on the panicle characters.

    DOI: 10.11248/jsta1957.48.131

    CiNii Article

    researchmap

  • Effect of Temperature at the Ripening Period on Dark Respiration and Dry Matter Production in Rice. - Comparison of the effects in the plants sown in pots at different times Reviewed

    Yoshihiko Hirai, Takumi Yamada, Makoto Tsuda

    Japanese Journal of Crop Science   72 ( 4 )   436 - 442   2003

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.72.436

    Scopus

    J-GLOBAL

    researchmap

  • Effects of spikelet removal on dark respiration and dry-matter production in rice Reviewed

    Yoshihiko Hirai, Yoshio Kojima, Kentarou Numa, Makoto Tsuda

    Japanese Journal of Crop Science   72 ( 2 )   185 - 191   2003

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.72.185

    Scopus

    J-GLOBAL

    researchmap

  • Effects of plant growth regulators on number of spikelets per panicle in rice (Oryza sativa L.) under saline flooding conditions Reviewed

    C Yokoyama, M Tsuda, Y Hirai

    JAPANESE JOURNAL OF CROP SCIENCE   71 ( 3 )   376 - 382   2002.9

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.71.376

    Web of Science

    J-GLOBAL

    researchmap

  • Efficient dry matter production at the vegetative stage because of low maintenance respiration rate among rice varieties Reviewed

    Y Hirai, M Tsuda, A Enaida

    JAPANESE JOURNAL OF CROP SCIENCE   71 ( 1 )   110 - 115   2002.3

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.71.110

    Web of Science

    J-GLOBAL

    researchmap

  • Effect of saline irrigation during grain-filling period on dry-matter increase of hulled rice Reviewed

    D Makihara, M Tsuda, Y Hirai, T Kuroda

    JAPANESE JOURNAL OF CROP SCIENCE   70 ( 1 )   71 - 77   2001.3

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.70.71

    Web of Science

    J-GLOBAL

    researchmap

  • Evaluation of salinity tolerance in rice: Photosynthesis of excised leaves in relation to sodium accumulation Reviewed

    D Makihara, Y Hirai, M Tsuda, K Okamoto

    JAPANESE JOURNAL OF CROP SCIENCE   70 ( 1 )   78 - 83   2001.3

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.70.78

    Web of Science

    J-GLOBAL

    researchmap

  • Plant water relation and silicon concentration in two rice varieties differing in salinity tolerance. Reviewed

    Takatsuka, M, Makihara, D, Tsuda, M, Hirai, Y, Takamura, T

    Japan Journal of Tropical Agriculture   45 ( 4 )   259 - 265   2001

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    Differences in salinity tolerance in rice varieties could not be explained by the tissue sodium concentration under saline soil conditions in some cases. This study was carried out to determine whether the plant water status and tissue silicon concentration were responsible for the varietal differences in salinity tolerance in rice. A salinity-sensitive variety Mangasa and a salinity-tolerant variety IR4595-4-1-13 were transplanted to pots filled with soil to which sodium chloride was added at a rate of 10g/pot and were compared with plants grown without addition of sodium chloride. Decrease in shoot dry matter and percentage of ripened grains due to soil salinity were conspicuous in Mangasa, resulting in a larger decrease in grain yield. Although the midday leaf water potential decreased by salinity, the degree of its reduction and osmotic adjustment did not differ between the varieties. Reduction of stomatal conductance due to salinity was larger in Mangasa. Potassium concentration in leaves and stems decreased under salinity in both varieties, whereas the sodium concentration in Mangasa increased slightly more than that in IR4595-4-1-13. There were no changes in the potassium and sodium concentrations in hulls due to salinity in the two varieties. Silicon concentration in IR4595-4-1-13 decreased under salinity in leaves and stems but did not change in hulls. In contrast, the reduction of the silicon concentration in Mangasa due to salinity was observed only in hulls. Therefore, it was concluded that Mangasa was sensitive to saline soil conditions as reflected in the lower dry matter production and lower percentage of ripened grains due to the larger reduction of stomatal conductance and the silicon concentration in hulls.

    DOI: 10.11248/jsta1957.45.259

    CiNii Article

    researchmap

  • Relationship between spikelet number and dry matter production under saline soil and low solar radiation conditions in two rice (Oryza sativa L.) varieties. Reviewed

    Tsuda, M, Yokoyama, M, Makihara, D, Hirai, Y

    Japan Journal of Tropical Agriculture   2001 ( 3 )   192 - 198   2001

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    Rice (Oryza sativa L.) yield is low under saline soil conditions due to the small number of spikelets per panicle (SN) and there are varietal differences in the sensitivity of SN to soil salinity. This study was carried out to determine whether varietal differences in the sensitivity were attributable to dry matter production under saline soil conditions. A sensitive variety IR28 and a tolerant variety IR4595-4-1-13 were grown in pots filled with sand and submerged in four saline solutions containing 25mM to 150mM sodium chloride (NaCl) from the later stage of spikelet initiation to the panicle emergence stage and compared to plants grown under low solar radiation (30% to 80% of natural radiation) . Control plants were grown without NaCl application under natural solar radiation. Under the saline conditions dry matter increase per shoot (ΔW) was more reduced in IR28 than in IR4595-4-1-13. The percentage of decrease of SN in IR28 was larger than that in IR4595-4-1-13, where the degeneration of spikelets on secondary rachis-branches was the main cause of the decrease of SN. The panicle dry weight at panicle emergence (Wp) was related to SN and the decrease of ΔW was responsible for the small Wp since dry matter distribution to the panicle (Wp/ΔW) did not change. There was almost no accumulation of sodium in panicle, but substantial accumulation was observed in leaf and stem, IR28 being a better accumulator. Under the low solar radiation conditions, though IR4595-4-1-13 maintained higher SN, there were small varietal differences in the response of ΔW, Wp and SN, while Wp/ΔW was enhanced due to the low solar radiation. Therefore, IR4595-4-1-13 was tolerant in terms of SN to soil salinity because a lower sodium concentration in leaves may maintain dry matter production, thus the limited changes in ΔW and Wp, resulting in a limited change in SN.

    DOI: 10.11248/jsta1957.45.192

    CiNii Article

    researchmap

  • The involvement of silicon deposition in salinity-induced white head in rice (Oryza sativa L.). Reviewed

    Tsuda, M, Morita, M, Makihara, D, Hirai, Y

    Plant Production Science   3 ( 3 )   328 - 334   2000

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:CROP SCIENCE SOCIETY OF JAPAN  

    White heads and silicon deposition in spikelets were observed in three rice varieties(IR28, IR4595-4-1-13 and Mangasa), which were different in vulnerability to white heads under salinity conditions. Plants were grown in three-liter pots with two nitrogen fertilizer levels(HN: high nitrogen and LN: low nitrogen)and subjected to salinity by submerging the soil in a 100mM sodium chloride solution from booting to seven days after panicle emergence. White heads occurred in IR4595-4-1-13 and Mangasa but not in IR28 under the salinity condition, and the vulnerability to white heads was higher with the HN treatment than the LN treatment. Silicon deposition in spikelets, measured by energy-dispersive X-ray analysis with a scanning electron microscope, was correlated to the vulnerability to white heads. White heads inhibited flower opening and thus induced high sterility. It was concluded that low silicon deposition in spikelets was responsible for the occurrence of white heads under salinity conditions in rice.

    DOI: 10.1626/pps.3.328

    CiNii Article

    researchmap

  • Effects of saline irrigation at various reproductive stages on rice yield Reviewed

    D Makihara, M Tsuda, Y Hirai, T Kuroda

    JAPANESE JOURNAL OF CROP SCIENCE   68 ( 4 )   487 - 494   1999.12

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.68.487

    Web of Science

    J-GLOBAL

    researchmap

  • Effect of salinity on the growth and development of rice (Oryza sativa L.) varieties. Reviewed

    Makihara, D, Tsuda, M, Morita, M, Hirai, Y, Kuroda, T

    Japan Journal of Tropical Agriculture   43 ( 4 )   285 - 294   1999

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Japanese Society for Tropical Agriculture  

    Growth and yield responses of rice (Oryza sativa L.) to soil salinity were studied in six varieties differing in tolerance at the seedling stage. Plants were grown in four-liter pots containing soil treated with sodium chloride at a rate of 5g/pot, 10g/pot and 15g/pot, and control plants were grown without application of sodium chloride. Varieties tolerant at the seedling stage (Kala Rata 1-24 and IR4595-4-1-13) grew well under salinity, but in other tolerant varieties (Nona Bokra and Pokkali) leaf emergence, tillering and plant length were suppressed by salinity at a similar degree as in the sensitive varieties (IR28 and Mangasa) . The decrease in yield was more conspicuous in IR28, Mangasa and Pokkali than in the other three varieties. Yield components responsible for the yield reduction varied: small number of spikelets in IR28 and Pokkali, and high sterility induced by white heads in Mangasa. Sodium concentration of panicle peduncle and flag and the uppermost third leaves at the maturing stage was similar in all the varieties except for Mangasa which showed the lowest sodium concentration. These results supported the assumption that salinity-tolerant varieties at the seedling stage do not always maintain grain yield at a sufficient level under salinity, and indicated that the plant ability to maintain a low level of sodium concentration is not related to salinity tolerance throughout the growth period.

    DOI: 10.11248/jsta1957.43.285

    CiNii Article

    researchmap

  • Effects of excessive soil moisture on plant growth and root morphology in buckwheat Reviewed

    HIRAI Yoshihiko, INOUE Miyuki, HASHIMOTO Tamae, TSUDA Makoto

    Report of the Chugoku Branch of the Crop Science Society of Japan   40 ( 0 )   1 - 7   1999

     More details

    Language:Japanese   Publisher:日本作物学会中国支部  

    Effects of anaerobic root medium and kinetin treatment of roots on plant growth, root morphology and aerenchyma resistance of buckwheat were examined. Under excessive soil moisture condition, the leaf nitrogen content, the dry matter production and the number of inflorescence were decreased. The lysigenous aerenchyma in the root was not formed, but the ratio of the area of cortex to that of root cross section was increased. The aerenchyma resistance was decreased with increases of the ratio. These observations suggest that buckwheat adapted to excessive soil moisture condition by decrease of aerenchyma resistance related to the change of cortex ratio. Application of kinetin to root medium under culture solution increased the plant dry matter and the area of cortex in root cross section. This suggest that the adaptability to excessive soil moisture condition could be improved by addition of kinetin.

    CiNii Article

    CiNii Books

    researchmap

  • Recovery of xylem hydraulic conductivity in rice (Oryza sativa L.) after drought. Reviewed

    Tsuda, M, Takahashi, Y, Yabe, K, Hirai, Y

    Japan Journal of Tropical Agriculture   42   182 - 184   1998

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.11248/jsta1957.42.182

    CiNii Article

    researchmap

  • Growth respiration in rice organs as affected by nitrogen content Reviewed

    Y Hirai, H Ehara, M Tsuchiya

    JAPANESE JOURNAL OF CROP SCIENCE   66 ( 4 )   640 - 646   1997.12

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.66.640

    Web of Science

    researchmap

  • Sound-stimulated Bioelectric Potential on the Leaf Surface of Soybean and Cucumber Plants Reviewed

    TSUCHIYA Mikio, YOSHINAGA Kenji, KUMANO Seiichi, HIRAI Yoshihiko

    Report of the Chugoku Branch of the Crop Science Society of Japan   36 ( 0 )   19 - 25   1995

     More details

    Language:Japanese   Publisher:日本作物学会中国支部  

    CiNii Article

    CiNii Books

    researchmap

  • Assimilation Chamber for a Whole Plant, in Which Root Respiration Can Be Continuously Measured by Using Infrared Gas Analyzer Reviewed

    TSUCHIYA Mikio, HIRAI Yoshihiko

    Report of the Chugoku Branch of the Crop Science Society of Japan   34 ( 0 )   8 - 15   1993

     More details

    Language:Japanese   Publisher:日本作物学会中国支部  

    An assimilation chamber for simultaneous measurement of photosynthesis, respiration and transpiration of intact plant was set up, and its function was examined especially inmeasuring root respiration and estimating dry matter increase by measured CO_2 exchange rate. Rice seedlings grown at different nutrient conditions were used as plant materials. Well-controlled pH and temperature of nutrient solution made possible a stable and continuous measurement of root respiration using an infrared gas analyzer. Dry matter increase calculated by CO_2 exchange rate was a good estimate of the measured value. There was positive correlation between top dry matter partitioning ratio and relative value of top respiration rate, and between top-root dry matter partitioning ratio and top-root respiration ratio. Therefore, the assimilation chamber was evaluated to be of help for the analysis of physiological dynamics in the growing plant.

    CiNii Article

    CiNii Books

    researchmap

  • VARIETAL DIFFERENCE ON MORPHOLOGICAL CHANGE OF LEAF BLADE BY DIFFERENT NUTRIENT CONCENTRATION OF CULTURE SOLUTION IN RICE SEEDLINGS Reviewed

    H EHARA, M TSUCHIYA, Y HIRAI, T OGO

    JAPANESE JOURNAL OF CROP SCIENCE   61 ( 1 )   10 - 15   1992.3

     More details

    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1626/jcs.61.10

    Web of Science

    J-GLOBAL

    researchmap

▼display all

Books

  • 作物学(今井勝・平沢正編)

    平井儀彦( Role: Contributor ,  56-58)

    文永堂出版  2013 

     More details

  • 基礎演習産業生物科学,教科書編集委員会編

    平井儀彦( Role: Contributor ,  73, 149)

    岡山大学出版会  2009 

     More details

  • ファイテク How to みる・きく・はかる−植物環境計測−,ファイトテクノロジー研究会編

    平井儀彦( Role: Contributor ,  169)

    養賢堂  2002 

     More details

  • 有機廃棄物資源化大事典,有機質資源化推進会議編

    千葉喬三, 土屋幹夫, 嶋一徹, 平井儀彦( Role: Contributor ,  440-445)

    農文協  1997 

     More details

MISC

  • Analysis of salt tolerance QTL associated with yield traits on chromosome 6 in rice variety Kasalath

    和田東洋, 冨田朝美, 齊藤邦行, 平井儀彦

    日本作物学会講演会要旨集   256th   2023

  • QTL MAPPING FOR SALT TOLERANCE AT REPRODUCTIVE STAGE IN RICE: A MINIREVIEW

    Sao MAI Nguyen, HIRAI Yoshihiko

    Journal of Environmental Science for Sustainable Society   10   MR08_p31 - MR08_p34   2021

     More details

    Language:English   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:Graduate School of Environmental and Life Science, Okayama University  

    <p>   Salt stress is one of the major abiotic stresses limiting rice production worldwide. Since the expansion of saline soil continues, there is a need to develop salt-tolerant rice varieties with high yields to ensure food security. Detecting quantitative trait loci (QTLs) for salt tolerance contributes greatly to breeding; however, limited studies have reported on the reproductive stage due to time-consuming and laborious processes. This review on QTL mapping for salt tolerance at the reproductive stage in rice shows that almost all QTLs explain small phenotypic variations scattered over the genome. Still, several QTLs were mapped in the same region on chromosomes 1, 2, and 6. The pyramiding of such QTLs is expected to improve tolerance and yield in elite varieties.</p>

    DOI: 10.3107/jesss.10.MR08

    CiNii Article

    researchmap

  • Relationship between soil surface root and light condition in chromosome segment lines with indica group rice variety IR64 genetic background

    冨田朝美, 齊藤大樹, 福田善通, 平井儀彦, 齊藤邦行, 小葉田亨

    日本作物学会講演会要旨集   251st   2021

  • コムギとオオムギの耐塩性の種間差および品種間差に関わる要因の解析

    上野綾華, DAO Hanh Duy, 小葉田亨, 齊藤邦行, 平井儀彦

    日本作物学会講演会要旨集   248th   2019

  • The effects of phoshorus application on salinity tolerance under different fertiility upland conditions in interspecific rice cultivar NERIKA 1

    Toru HONDA, Makoto TSUDA, Yoshihiko HIRAI

    Proceedingd of 8th Asian crop science association conference   127 - 133   2016

     More details

  • Rice cultivar differences in effects of low salt concentration in the upper layer of saline soils on the growth, development and yield

    TSUDA Makoto, YOKOGAWA Marie, HIRAI Yoshihiko

    82   82 - 83   2013.9

     More details

  • The Effect of Prevention of Root Injury on Growth, Development and Dry Weight in Rice (Oryza sativa L.) Transplanted to Saline Soil

    津田誠, 上田裕紀枝, 平井儀彦

    岡山大学農学部学術報告(Web)   101   7-12 (WEB ONLY) - 12   2012.2

     More details

  • Effects of application of N, P and K on the dry matter production and nutrient absorption of NERICA 1 in saline soil

    SONE Chiharu, BANDO Masaaki, TSUDA Makoto, HIRAI Yoshihiko

    78   148 - 149   2009.9

     More details

  • 塩ストレスの時期およびケイ素施肥がイネの白穂発生に及ぼす影響(日本作物学会中国支部講演会)

    津田 誠, 上田 裕紀枝, 平井 儀彦

    日本作物学会中国支部研究集録   ( 50 )   25 - 26   2009.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 92 Responses of NERICA cultivars to phosphorus deficiency and salinity under solution and soil cultures

    Sone Chiharu, Tsuda Makoto, Hirai Yoshihiko

    Japanese Journal of Crop Science   77 ( 2 )   184 - 185   2008.9

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 86 Changes of growth and yield in rice grown on the saline soil as affected by soil salt profile

    Taketa Toshiaki, Tsuda Makoto, Hirai Yoshihiko

    Japanese Journal of Crop Science   77 ( 2 )   172 - 173   2008.9

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 鶏糞燃焼灰とバイオ強酸水の施用がイネの生育収量に及ぼす影響(日本作物学会中国支部講演会)

    津田 誠, 池川 侑花, 平井 儀彦

    日本作物学会中国支部研究集録   ( 49 )   8 - 9   2008.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 子実肥大期以降の生育条件の違いがダイズの裂皮粒発生に及ぼす影響(日本作物学会中国支部講演会)

    平井 儀彦, 津島 洋, 津田 誠

    日本作物学会中国支部研究集録   ( 49 )   40 - 41   2008.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 窒素・リン酸の移植前処理が熱帯イネの初期生長に及ぼす影響(講演要旨,第138回講演会)

    江原 宏, 大島 淳史, 津田 健吾, 大橋 由明, 中川 拓未, 渡邊 和洋, 津田 誠, 平井 儀彦

    東海作物研究   ( 138 )   16 - 16   2008.1

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 水稲2品種における塩ストレス条件下の籾数と乾物生産との関係(日本作物学会中国支部講演会)

    津田 誠, 安井 文, 平井 儀彦

    日本作物学会中国支部研究集録   ( 48 )   36 - 37   2007.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • Reduction of Dry Matter Production Related to Electrical Conductivity of Stagnant Water in Rice Subjected to Increasing Salt Stress

    Tsuda Makoto, Hirai Yoshihiko

    96 ( 96号 )   49 - 54   2007

     More details

  • Growth and Sodium Accumulation in the Tillers which Appear on the Upper Nodes in Rice (Oryza sativa L.) Under Saline Conditions

    曽根千晴, 津田誠, 平井儀彦

    岡山大学農学部学術報告   95 ( 95 )   41 - 47   2006.2

     More details

  • グリシンベタインの葉面散布はネリカの耐塩性を向上させるか?(日本作物学会中国支部講演会)

    山岸 勝, 津田 誠, 平井 儀彦

    日本作物学会中国支部研究集録   ( 46 )   36 - 37   2005.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 塩処理の時期と濃度がイネの生育に及ぼす影響(日本作物学会中国支部講演会)

    津田 誠, 平井 儀彦

    日本作物学会中国支部研究集録   ( 46 )   2 - 3   2005.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 塩ストレス下におけるイネ根の活性酸素生成とNa吸収との関係(日本作物学会中国支部講演会)

    平井 儀彦, 齋藤 武範, 津田 誠

    日本作物学会中国支部研究集録   ( 46 )   38 - 39   2005.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 分げつ発生節位ならびに土壌の違いがイネのNa蓄積と生育に及ぼす影響(日本作物学会中国支部講演会)

    曽根 千晴, 津田 誠, 平井 儀彦

    日本作物学会中国支部研究集録   ( 46 )   4 - 5   2005.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 穂と茎のシンク強度の違いがイネの光合成日変化に及ぼす影響(日本作物学会中国支部講演会)

    平井 儀彦, 中井 清裕, 津田 誠

    日本作物学会中国支部研究集録   ( 46 )   18 - 19   2005.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • 14 New Rice for Africa (NERICA) Accumulates Less Sodium in Stem under Saline Conditions

    Sone Chiharu, Tsuda Makoto, Yamagishi Masaru, Hirai Yoshihiko

    Japanese Journal of Crop Science   73 ( 2 )   28 - 29   2004.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 15 Water Content of Panicle Differs between the Two Cultivars Resistant and Sensitive to White Head due to Warm and Dry Winds

    TSUDA Makoto, SAWANE Chika, HIRAI Yoshihiko

    Japanese Journal of Crop Science   73 ( 2 )   30 - 31   2004.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 131 Effects of Ear Removal on Translocation of carbohydrate and Dark Respiration in Rice

    HIRAI Yoshihiko, NAKAI Kiyohiro, TSUDA Makoto

    Japanese Journal of Crop Science   73 ( 2 )   262 - 263   2004.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 17. Progress of Cashew (Anacardium occidental L.) Cultivation in Indonesia

    Pitono Joko, Tsuda Makoto, Nurhayati Hera, Hirai Yoshihiko

    Japanese journal of tropical agriculture   48 ( 2 )   33 - 34   2004.10

     More details

    Language:English   Publisher:Japanese Society for Tropical Agriculture  

    CiNii Article

    CiNii Books

    researchmap

  • 19. Studies on the Alleviation of Drought Damage under Saline Soil Conditions in Rice (Oryza sativa L.)

    Wang Jungang, Tsuda Makoto, Hirai Yoshihiko

    Japanese journal of tropical agriculture   48 ( 2 )   37 - 38   2004.10

     More details

    Language:Japanese   Publisher:Japanese Society for Tropical Agriculture  

    CiNii Article

    CiNii Books

    researchmap

  • 18. The Effect of Compact Soil on the Growth of Cashew (Anacardium occidentale L.) at the Seedling Stage

    Pitono Moko, Tsuda Makoto, Hirai Yoshihiko

    Japanese journal of tropical agriculture   48 ( 2 )   35 - 36   2004.10

     More details

    Language:English   Publisher:Japanese Society for Tropical Agriculture  

    CiNii Article

    CiNii Books

    researchmap

  • P-27 Effect of high temperature on dark respiration, dry matter production and milky white kernel of rice

    HIRAI Yoshihiko, YAMADA Takumi, ARAI Hiroki, TSUDA Makoto

    Japanese Journal of Crop Science   73 ( 1 )   266 - 267   2004.3

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Water Stress Sensitivity May Increase under the Soil Conditions with High NaCl Concentrations in Rice

    Tsuda Makoto, Wang Jungang, Hirai Yoshihiko

    Japanese Journal of Crop Science   72 ( 2 )   384 - 385   2003.9

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Measurement of Cyanide-Resistant Respiration in Leaf Blade of Rice by Use of Oxygen Isotope Discrimination.

    平井儀彦, 正木孝幸, 三好真, 山田稔, 斎藤武範, 中井清裕, 津田誠

    岡山大学農学部学術報告   92 ( 92 )   47 - 52   2003.2

     More details

  • 37. Increase of xylem vulnerability to dysfunction due to low water potential as affected by low incident irradiance in cashew (Anacardium occidentale L.) seedlings

    Pitono Joko, Tsuda Makoto, Hirai Yoshihiko

    Japanese journal of tropical agriculture   46 ( 2 )   72 - 73   2002.9

     More details

    Language:English   Publisher:Japanese Society for Tropical Agriculture  

    CiNii Article

    CiNii Books

    researchmap

  • Effects of sowing time on dark respiration and dry matter production of rice

    HIRAI Yoshihiko, YAMADA Takumi, TSUDA Makoto

    Japanese Journal of Crop Science   71 ( 1 )   230 - 231   2002.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Genotypic Variation in Vulnerability to Hydraulic Dysfunction due to Low Water Potentail in Rice (Oryza sativa L.) Leaves

    Tsuda Makoto, Ogasa Takashi, Hirai Yoshihiko

    Japanese Journal of Crop Science   71 ( 1 )   188 - 189   2002.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Xylem Vulnerability to Dysfunction in Indonesian Cashew(Anacardium occidentale L.) Strains.

    PITONO Joko, TSUDA Makoto, HIRAI Yoshihiko

    Tropical Agriculture and Development   46 ( 3 )   129 - 135   2002

     More details

    Language:English   Publisher:Japanese Society for Tropical Agriculture  

    Establishment of cashew trees often fails due to drought damage at the seedling stage although cashew is an important cash crop in Indonesia. To determine whether the ability to maintain water transport in xylem, which is often responsible for plant adaptation to drought, is a suitable parameter for early evaluation of drought resistance at the seedling stage, differences in xylem vulnerability to dysfunction and the relationship to xylem vessel diameter were examined in ten high-yielding strains in cashew. The xylem vulnerability was evaluated by the applied pressure which induced 50% loss of stem hydraulic conductivity (P50) . Variation in the P50 value from 0.32 MPa for Wonogiri to 1.50 MPa for A3-1 was recorded among the strains. However, since there was no difference in the mean vessel diameter, the use of the vessel diameter was not suitable for the evaluation of xylem vulnerability. Since a strain such as A3-1 may maintain the water continuity in the xylem under drought conditions, it was suggested that the plant ability to maintain the water continuity in the xylem would be a suitable parameter for the early evaluation of drought resistance at the seedling stage in cashew.

    DOI: 10.11248/jsta1957.46.129

    CiNii Article

    researchmap

  • Dark respiration and growth efficiency of rice varieties differing in the amount of translocation of accumulated carbohydrate

    HIRAI Yoshihiko, NUMA Kentarou, TSUDA Makoto

    Japanese Journal of Crop Science   70 ( 2 )   145 - 146   2001.9

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Dark respiration and growth efficiency of rice varieties differing in number of grains per head

    HIRAI Yoshihiko, KOJIMA Yoshio, TSUDA Makoto

    Japanese Journal of Crop Science   70 ( 1 )   256 - 257   2001.3

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Effects of Low Radiation and Ear Removal on Dark Respiration and Growth Efficiency in Rice

    HIRAI Yoshihiko, KOJIMA Yoshio, NUMA Kentaro, TSUDA Makoto

    Japanese Journal of Crop Science   69 ( 2 )   120 - 121   2000.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 登熟期の水稲における非構造性炭水化物の転流と暗呼吸との関係

    平井 儀彦, 兒嶋 良夫, 沼 健太郎, 津田 誠

    日本作物学会中国支部研究集録   ( 41 )   17 - 18   2000.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • Effects of Salinity and Low Radiation on Number of Spikelets and Dry Matter Production in Rice

    Tsuda Makoto, Yokoyama Chisa, Makihara Daigo, Hirai Yoshihiko

    Japanese Journal of Crop Science   69 ( 1 )   82 - 83   2000.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Changes of Rice Sodium Content due to Sodium Exclusion and Transpiration under Salinity.

    槙原大悟, 津田誠, 平井儀彦

    岡山大学農学部学術報告   89   31 - 37   2000.2

     More details

  • Effect of Saline Irrigation at Filling Period on Grain Filling of Rice

    MAKIHARA Daigo, TSUDA Makoto, HIRAI Yoshihiko

    Japanese Journal of Crop Science   68 ( 2 )   132 - 133   1999.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 塩分ストレスがイネの根系形態に及ぼす影響

    内藤 整, 槇原 大悟, 平井 儀彦, 津田 誠

    日本作物学会中国支部研究集録   ( 40 )   36 - 37   1999.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    塩分ストレス条件下で生育を高く維持するためには、地上部へのナトリウムの移行を抑制することが重要であり、根におけるナトリウム排除機能の重要性が指摘されている。しかし、どのような根の形質がより高い排除機能に結びついているか不明なばかりか、塩分ストレスが根にどのような影響を与えるかについてさえ明確となっていない。そこで本研究では、耐塩性程度の異なるイネ2品種を供試し、塩分ストレス下における根の発生・伸長について調査し、塩分ストレスがイネの根系形態に及ぼす影響について検討した。

    CiNii Article

    CiNii Books

    researchmap

  • 音刺激が作物の生育に及ぼす影響

    平井 儀彦, 井上 美由紀, 津田 誠

    日本作物学会中国支部研究集録   ( 40 )   40 - 41   1999.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    作物の音刺激に対する生育促進を示す事例が新聞などでとりあげられているが, 学術的報告は少なく, 音刺激が生育に及ぼす影響についてはよくわかっていない.音は空気の振動刺激によって伝わることから, 音刺激が葉の振動刺激として作物に働き, 内生ホルモン量を変えることが予想される.また, 音刺激は植物の気孔反応を変えるという報告があることから, 本研究では音刺激による葉の振動を調べるとともに, 音刺激が作物の生育, 気孔開度およびアブシジン酸(ABA)含量に及ぼす影響について検討した.

    CiNii Article

    CiNii Books

    researchmap

  • Salinity-induced white head in rice

    MORITA M., Tsuda Makoto, Makihara Daigo, Hirai Yoshihiko

    Jpn. J. Crop. Sci.   68 ( 1 )   112 - 113   1999

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • P20 PLANT RESPIRATION ASSOCIATED WITH GROWTH, MAINTENANCE AND NITROGEN ASSIMILATION IN RICE SUPPLIED WITH AMMONIUM OR NITRATE

    HIRAI Yoshihiko

    Japanese Journal of Crop Science   67 ( 2 )   370 - 371   1998.10

     More details

    Language:English   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Reduction in Top Na Content by Sodium Exclusion in Rice Root

    MAKIHARA Daigo, HIRAI Yoshihiko, TSUCHIYA Mikio, TSUDA Makoto

    Japanese Journal of Crop Science   67   98 - 99   1998.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Varietal Difference in Response of Photosynthesis to Sodium Accumulation in Leaf Blade of Rice

    MAKIHARA Daigo, HIRAI Yoshihiko, TSUCHIYA Mikio, TSUDA Makoto

    Japanese Journal of Crop Science   67   100 - 101   1998.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 109 Increase of gas-exclusion rate of rice root under water stress

    Kanja Takayuki, Hirai Yoshihiko, Tsuchiya Mikio

    Japanese Journal of Crop Science   66 ( 2 )   217 - 218   1997.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 土壌水分処理およびカイネチン処理がソバの生育と根の形態に及ぼす影響

    平井 儀彦, 井上 美由紀

    日本作物学会中国支部研究集録   ( 38 )   64 - 65   1997.7

     More details

    Language:Japanese   Publisher:日本作物学会  

    ソバは動脈硬化の予防に関わるルチンなどを含むことから, 近年機能性食品として評価が高まり, 水田の転換作物として作付け面積の拡大が図られている.しかし, 過湿土壌適性が小さく, これが水田作付けの制限要因になっている.過湿土壌条件下で生育は初期から抑制され, 節数, 花房数, 小花数が低下し減収する.一方, 湿害は根への酸素供給低下によると考えられ, 通気組織の発達にともない湿害の軽減が予測される.トウモロコシではカイネチン処理によって破生通気組織が形成されることより, ソバでもカイネチン処理によって根の内部形態が変化すると考えられた.そこで本研究では, (1)土壌水分の違いがソバの生育, 小花数および根の内部形態に及ぼす影響, (2)カイネチン処理がソバの根の内部形態に及ぼす影響を調べた.

    CiNii Article

    CiNii Books

    researchmap

  • 56 Effect of drought on the structure and gas-exclusion rate of rice roots.

    Tsuchiya Mikio, Kanja Takayuki, Hirai Yoshihiko

    Japanese Journal of Crop Science   65 ( 2 )   111 - 112   1996.10

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 乾燥ストレス処理が水稲根の溶存気体排除率に及ぼす影響

    神社 隆之, 平井 儀彦, 土屋 幹夫

    日本作物学会中国支部研究集録   ( 37 )   54 - 55   1996.8

     More details

    Language:Japanese   Publisher:日本作物学会  

    演者らは既報において, 植物の根の導管液中の溶存気体量が培地に比べて低くなることを報告した.溶存気体量が吸水に際して減少することは, 気泡の発生によって引き起こされる導管閉塞を回避する上で有意義であり, 耐乾燥性を支援する重要な形質であると推測される.本実験では, 耐乾燥性と気体排除率との関連及び根の内部形態と気体排除率の関係を検討するために, 根部の水分条件を異にして生育させた場合, また耐乾燥性が異なるイネ品種を材料にした場合の根の溶存気体の排除率の違いを調べるとともに, 内部形態の光学顕微鏡観察を行った.

    CiNii Article

    CiNii Books

    researchmap

  • 41 Relationship between growth, carbon exchange and nutrient uptake in wheat plants supplied with ammonium or nitrate nutrition.

    Hirai Yoshihiko, Tsuchiya Mikio

    Japanese Journal of Crop Science   65 ( 1 )   82 - 83   1996.4

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • Analysis of Physiological Dynamics in Plant Growth.

    平井儀彦

    岡山大学農学部学術報告   85   109 - 113   1996.2

     More details

  • 115 Relationship between growth, carbon exchange and nitrogen uptake in rice plants differing in the non-structural carbohydrate content.

    Hirai Yoshihiko, Sakakibara Motohiro, Tsuchiya Mikio

    Japanese Journal of Crop Science   64 ( 2 )   229 - 230   1995.11

     More details

    Language:Japanese   Publisher:The Crop Science Society of Japan  

    CiNii Article

    CiNii Books

    researchmap

  • 窒素形態の異なる培地におけるコムギ幼植物の生育と CO_2 収支および養分吸収との関係

    平井 儀彦, 土屋 幹夫

    日本作物学会中国支部研究集録   ( 35 )   31 - 32   1994.8

     More details

    Language:Japanese   Publisher:日本作物学会  

    イネ幼植物では光合成および構成呼吸, 維持呼吸の測定によって, 茎葉部と根部への乾物の分配比が解析できることを報告した。しかし, 根部の呼吸は養分吸収にも密接に係わっていることから, 窒素の形態によっては構成呼吸と乾物増加および乾物分配の関係が異なることが予想される。本研究では, NO_3およびNH_4を窒素源とした場合のコムギ幼植物の生育とCO_2収支および養分吸収との関係を解析し, この点を検討した。

    CiNii Article

    CiNii Books

    researchmap

  • 71 イネ幼植物の生育と構成呼吸および維持呼吸との関係

    土屋 幹夫, 平井 儀彦

    日本作物學會紀事   60 ( 2 )   141 - 142   1991.10

     More details

    Language:Japanese   Publisher:日本作物学会  

    CiNii Article

    CiNii Books

    researchmap

  • イネ幼植物の生育と構成呼吸および維持呼吸との関係

    土屋 幹夫, 平井 儀彦, 小合 龍夫

    日本作物学会中国支部研究集録   ( 32 )   30 - 33   1991.8

     More details

    Language:Japanese   Publisher:日本作物学会  

    光合成・呼吸の測定は, 個体の生育の量的拡大を非破壊的に推定し得る有効な手段であるが, 形態形成の方向といった質的な生育方向の推定には, 未だ有効な手段が確立していない.本実験では, 異なる培養液濃度条件下で栽培したイネ幼植物個体の生長と, 構成呼吸および維持呼吸との関係を解析し, CO_2収支の測定による生育方向推定の可能性を検討した.

    CiNii Article

    CiNii Books

    researchmap

▼display all

Presentations

  • NERICAイネの蒸散と水利用効率に及ぼす土壌乾燥の影響

    Nguyen Hien Thi Thanh, 山中 碩人, 小葉田 亨, 平井 儀彦, 齊藤 邦行

    2023.3 

     More details

    Event date: 2023.3.29 - 2023.3.30

    researchmap

  • Reduction of transpiration rate depending on soil desiccation in NERICA rice

    山中碩人, NGUYEN Hein Thi Thanh, 小葉田亨, 平井儀彦, 齊藤邦行

    日本作物学会講演会要旨集  2023 

     More details

    Event date: 2023

    researchmap

  • QTL analysis of salt tolerance on chromosome 6 in rice variety Nona Bokra

    平井儀彦, 前岡洸希, 井本竜太, EMAM AHAMED M.M., 冨田朝美, 齊藤邦行

    日本作物学会講演会要旨集  2023 

     More details

    Event date: 2023

    researchmap

  • Cl− More Detrimental Than Na+ in Salt-stressed Rice.

    2021.9.9 

     More details

    Event date: 2021.9.8 - 2021.9.10

    researchmap

  • インド型イネ品種IR64の遺伝的背景を有する染色体断片系統群における地表根発生と光との関係

    冨田 朝美, 齊藤 大樹, 福田 善通, 平井 儀彦, 齊藤 邦行, 小葉田 亨

    第251回日本作物学会講演会  2021.3 

     More details

    Event date: 2021.3.29 - 2021.3.30

    researchmap

  • コシヒカリ/Nona Bokra染色体断片置換系統とコシヒカリの交配後代を用いた長期塩条件下での耐塩性に関わるQTLの解析

    前岡洸希, 坂田悠貴, 平井儀彦

    日本作物学会第249回講演会  2020.3 

     More details

    Event date: 2020.3.26 - 2020.3.27

    researchmap

  • 異なる塩類処理がイネの生育と子実生産に及ぼす影響

    平井 儀彦, Hanh Duy Dao, 前岡 洸希, Mai Nguyen Sao

    日本作物学会第248回講演会  2019.9 

     More details

    Event date: 2019.9.25 - 2019.9.26

    researchmap

  • コムギとオオムギの耐塩性の種間差および品種間差に関わる要因の解析

    上野 綾華, Hanh Duy Dao, 小葉田 亨, 齊藤 邦行, 平井 儀彦

    日本作物学会第248回講演会  2019.9 

     More details

    Event date: 2019.9.25 - 2019.9.26

    researchmap

  • QTL analysis of grain productivity in rice under long-term salt stress using a Koshihikari/IR64 chromosome segment substitution line and its backcross progeny populations

    Mai Nguyen Sao, Yusuke Machida, Mai Fukada, Yoshihiko Hirai

    2019.9 

     More details

    Event date: 2019.9.25 - 2019.9.26

    researchmap

  • QTL analysis for salt tolerance in rice under long-term salt stress using Koshihikari/IR64 chromosome segment substitution lines and backcross progeny F2 population.

    Mai Nguyen Sao, Mai Fukada, Hanh Duy Dao, Yoshihiko Hirai

    2019.3 

     More details

    Event date: 2019.3.28 - 2019.3.29

    researchmap

  • 土壌上層の低塩分濃度が耐塩性の異なるイネ品種の生育収量に及ぼす影響(一般講演,日本作物学会中国支部講演会)

    津田 誠, 横川 茉梨絵, 平井 儀彦

    日本作物学会中国支部研究集録  2013.7.30  日本作物学会

     More details

    Event date: 2013.7.30

    Language:Japanese  

    researchmap

  • Relationships between white head and water content under the soil water deficit in rice (Oryza sativa L.)

    KOJO Koji, TSUDA Makoto, HIRAI Yoshihiko

    2013.3.28 

     More details

    Event date: 2013.3.28

    Language:Japanese  

    researchmap

  • 海水施用が早晩性の異なるイネの生育と収量におよぼす影響(一般講演,日本作物学会中国支部講演会)

    津田 誠, 矢野 亜純, 平井 儀彦

    日本作物学会中国支部研究集録  2012.7.26  日本作物学会

     More details

    Event date: 2012.7.26

    Language:Japanese  

    researchmap

  • Growth of rice seedlings as affected by the heterogeneous distribution of soil salinity in cultivars with different salinity tolerance

    TSUDA Makoto, YAMASHITA Ayumi, YOKOGAWA Marie, HIRAI Yoshihiko

    2012.3.29 

     More details

    Event date: 2012.3.29

    Language:Japanese  

    researchmap

  • Detection of quantitative trait loci for Na^+ accumulation in rice (Oryza sativa L.) under different water temperature

    NISHIDA Ryutaro, HIRAI Yoshihiko, TSUDA Makoto

    2012.3.29 

     More details

    Event date: 2012.3.29

    Language:Japanese  

    researchmap

  • The varietal differences of water use in saline soil in rice (Oryza sativa L.)

    HA Buri, TSUDA Makoto, HIRAI Yoshihiko

    2011.3.30 

     More details

    Event date: 2011.3.30

    Language:Japanese  

    researchmap

  • Effect of Phosphorus Fertilization on Growth and Yield in NERICA Cultivars Grown on Infertile Saline Soil

    BANDO Masaaki, TSUDA Makoto, HIRAI Yoshihiko

    2010.9.3 

     More details

    Event date: 2010.9.3

    Language:Japanese  

    researchmap

  • The effect of amount of soil and water on water use in rice (Oryza sativa L.) as affected by soil salinity

    HABURI, TSUDA Makoto, HIRAI Yoshihiko

    2010.3.30 

     More details

    Event date: 2010.3.30

    Language:Japanese  

    researchmap

  • Effects of high temperature during seed filling on the seed maturity, the cracking and surface structure in soybean seed coat

    HIRAI Yoshihiko, TSUSHIMA Hiroshi, MATSUMOTO Nozomi, TSUDA Makoto

    2010.3.30 

     More details

    Event date: 2010.3.30

    Language:Japanese  

    researchmap

  • Effects of Phosphate Application on Salt Tolerance in Different Rice Cultivars under Infertile Saline Soil Condition

    BANDO Masaaki, TSUDA Makoto, HIRAI Yoshihiko

    2009.9.29 

     More details

    Event date: 2009.9.29

    Language:Japanese  

    researchmap

  • The effects of salinity on water use of stored soil water in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.)

    Haburi, TSUDA Makoto, HIRAI Yoshihiko

    2009.9.29 

     More details

    Event date: 2009.9.29

    Language:Japanese  

    researchmap

  • イネ品種Nona Bokraの第6染色体に座乗する耐塩性QTL の解析

    平井 儀彦, 前岡 洸希, 井本 竜太, Ahamed M.M. Emam, 冨田 朝美, 齊藤 邦行

    2023.9 

     More details

  • イネ品種Kasalathの第6染色体に座乗する収量形質に関わる耐塩性QTLの解析

    和田 東洋, 冨田 朝美, 齊藤 邦行, 平井 儀彦

    2023.9 

     More details

  • 日本型水稲品種コシヒカリ由来の鉄毒耐性に関する染色体領域の解析

    冨田 朝美, 小林 奈々佳, 平井 儀彦

    2023.3 

     More details

  • NERICA イネの土壌乾燥に伴う蒸散低下率

    山中 碩人, Nguyen Hien Thi Thanh, 小葉田 亨, 平井 儀彦, 齊藤 邦行

    2023.3 

     More details

  • 異なる塩濃度条件がイネ New Plant Type 品種の染色体断片を有する系統の穂数および有効茎歩合に与える影響

    水田葉月, 秋元唯, 平井儀彦, 齊藤邦行, 冨田朝美

    日本作物学会第252回講演会  2021.9.10 

     More details

  • 塩条件下での栽植密度と施肥量の違いがイネの生育と収量に及ぼす影響

    岡聡一朗, 平井儀彦

    日本作物学会中国支部講演会58  2018.7 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • 土壌塩分ストレス条件下における栽植密度がイネ収量に及ぼす影響

    岡聡一朗, 津田誠, 平井儀彦

    日本作物学会第244回講演会  2017.9 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • Identification and characterization of chromosome regions associated with salt tolerance in rice under long-term salt stress using chromosome segment substitution lines derived from Koshihikari and Nona Bokra

    Thuy N.T.T, Tokuyasu M, Tsuda M, Hirai Y

    2017.3 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • 土壌塩分処理が土壌塩分ストレスがイネの分げつ数に及ぼす影響

    安藤裕二, 平井儀彦, 津田誠

    日本作物学会中国支部講演会  2016.7 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • リン欠乏および塩の複合ストレスがNERICA品種の根の生育と耐塩性に及ぼす影響

    曽根千晴, 平井儀彦, 津田誠

    根の研究集会  2015.6 

     More details

    Language:Japanese   Presentation type:Poster presentation  

    researchmap

  • 耐塩性の異なるイネ品種の生育と葉の枯死に及ぼすCl-の影響

    平井儀彦, 黒田真央, 津田誠

    日本作物学会第239回講演会  2015.3 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • 移植苗の根損傷が塩土壌における耐塩性が異なるイネ品種の生育収量に及ぼす影響

    津田誠, 岸元那津実, 平井儀彦

    日本作物学会第239回講演会  2015.3 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • Combination effects of salinity and pH in rice. International conference

    Hirai K, Hirai Y, Togami K, Tsuda M

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • ダイズ品種サチユタカの幼根周辺に発生する裂皮と子実形態との関係

    玉井康平, 平井儀彦, 速見昌親, 津田誠

    日本作物学会第238回講演会  2014.9 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • Varietal Difference of the Seed Coat Cracking of Soybean in Response to High Temperature Treatment during Seed-Filling International conference

    Hirai Y, Tsushima H, Matsumoto N, Hayami M, Tsuda M

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • 土壌塩類の違いが耐塩性の異なるイネ品種の生育と収量に及ぼす影響

    盛岡絢子, 平井儀彦, 津田誠

    日本作物学会第238回講演会  2014.9 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • 基肥の違いがダイズ裂皮粒発生に及ぼす影響

    平井儀彦, 速見昌親, 玉井康平, 津田誠

    日本作物学会第238回講演会  2014.9 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

  • The effects of phosphate application on salinity tolerance under different fertility upland conditions in interspecific rice cultivar NERICA1. International conference

    Honda T, Tsuda M, Hirai Y

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • Effects of different salts on growth and yield of wheat and barley. International conference

    Dao Duy Hanh, Hirai Y, Tsuda M

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • The varietal differences in use of water stored in saline soils in rice. International conference

    Tsuda M, Haburi, Hirai Y

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • Effects of NaCl and KCl on Growth and Yield of Rice Varieties Differing in Salinity Tolerance. International conference

    Morioka A, Hirai Y, Tsuda M

    The 8th ACSA CONFERENCE  2014.9 

     More details

    Language:English   Presentation type:Poster presentation  

    researchmap

  • 塩分布の異なる土壌における灌漑方法と苗齢の違いがイネの生育と収量に及ぼす影響

    掛橋孝洋, 津田誠, 平井儀彦

    日本作物学会第237回講演会  2014.3 

     More details

    Language:Japanese   Presentation type:Oral presentation (general)  

    researchmap

▼display all

Research Projects

  • Contribution of water use and water use efficiency to plant matter production in NERICA rice subjected to desiccated soils

    Grant number:23K05186  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    齊藤 邦行, 小葉田 亨, 平井 儀彦

      More details

    Grant amount:\4680000 ( Direct expense: \3600000 、 Indirect expense:\1080000 )

    乾燥土壌下における イネ品種の水利用効率(WUE)と乾物生産量,およびWUEと炭素同位体分別との関係を評価するため,NERICAイネ5品種,Dular,日本晴,北陸193号を供試して,1/5000aポットで栽培を行った.乾燥処理は止葉抽出開始時に対照区(C),中乾燥区(MD),強乾燥区(HD)それぞれ圃場容水量(FC) の100%,40%,10%に維持し,14 日間処理を継続した.WUE=ΔDW/(Tr/VD),ここでΔDWは乾物増加量,Trは蒸散量,VDは飽差である.Δ13C(‰)=[(δa-δp)/(1+δp)]×1000(δaとδpは大気中CO2と植物の同位体比).ΔDWとTr/VDの間には直線関係が認められ,ΔDWはTr/VDよりも先にゼロになり,それ以下の水分損失は乾物生産に寄与しないと考えられた.ΔDW=0の時の83.6g(Tr/VDc)をTr/VDから差し引くと,ΔDWとTr/VDcの関係は1本の直線で示された.WUEc=ΔDW/(Tr/VDc)とΔDWの間には有意な関係は見られなかった.WUEcの品種間差は小さかったが,HDではNERICA1とNERICA4が他の品種に比べ高い値を示した.Δ13Cは品種間差が見られたが,WUE,WUEcとの間には有意な関係は見られなかった.ネリカの陸稲品種では,WUEはバイオマス生産には寄与せず,蒸散能力すなわち水利用に寄与していると結論された.また,同位体分別は,乾物生産のWUEの指標としては有効ではなかった.

    researchmap

  • イネの穂数と稔実歩合に関与する耐塩性遺伝子の作用機構と集積効果の解明

    Grant number:20H02969  2020.04 - 2024.03

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    平井 儀彦, 冨田 朝美, 村田 芳行

      More details

    Grant amount:\17940000 ( Direct expense: \13800000 、 Indirect expense:\4140000 )

    塩害地におけるイネの収量向上のためには,長期塩条件での収量形質に関する耐塩性機構および関連遺伝子の解明が必要である.そこで,コシヒカリの遺伝的背景に第2染色体の一部がIR64 の染色体に置換された系統の SL2007とコシヒカリを交配して得られた後代系統を用いて,長期塩条件下での収量形質に関わるQTL解析を行った.その結果,第2染色体上に精籾重および穂数に対するQTLが検出され,精籾重に関するQTLは2.5Mbの領域に,穂数に関するQTLは0.6Mbの領域に絞り込まれた.さらに精籾重の維持に関わるQTL領域の絞り込みを行ったところ,同領域に出穂期関連遺伝子が含まれ,準同質遺伝子系統間で出穂日のずれが生じ,開花期の稔実に関わる生理的実験,ならびに耐塩性候補遺伝子の検討が困難であった.
    また,コシヒカリの遺伝背景にノナボクラ由来の穂数の維持に関わる染色体領域で組換えが生じた系統を用いて,QTL領域の絞り込みと遺伝子の発現解析を行った結果,明確な候補遺伝子が見いだせなかった.そこで,過去のQTL解析の再検討を行った結果,推定されたQTL領域はこれまで解析をしていない領域を含む約2.5Mbであることがわかった.このため,この耐塩性領域の絞り込みに向けて,準同質遺伝子系統を複数作出した.
    また,イネの耐塩性に関わる生理的要因の検討するため,様々な塩条件下で生育させ,植物体のイオン含有率と生育および枯死との関係を調べたところ,植物体のCl-含有率は,生育と枯死部割合と密接に関係することが示唆された.

    researchmap

  • Performance and genetic diversity of saline resistance for the grain filling in rice and wheat

    Grant number:19K05995  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    小葉田 亨, 平井 儀彦

      More details

    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    基準品種としてコシヒカリを、耐塩性の認められているコシヒカリの同質遺伝系統のSL540とSL506、耐塩性の比較的高いインデイカのIR64と低いIR29の穂培養を異なる培地NaCl濃度で行ったところ、すべての品種で0~5 mMで籾の充填率には明確な変化が起きなかった。また、コシヒカリとSL506、IR64、耐塩性品種のNona Bokraを出穂後0~50 mMで土耕栽培したところNona Bokraを除く品種で30 mM以上で登熟歩合に低下がみられた。これらの品種について穂首の水分含量とNa+とCl-の分析結果から穂首中の濃度を推定したところ土壌塩類濃度の増加による増加はNona Bokraでは増加がみられないにもかかわらず他の品種では増加した。これらの事から登熟に影響を与える塩濃度はさらに高い可能性があること、土壌からの吸収塩類の抑制及び植物体内での排除能が関与していることが推定された。しかし、さらに直接的な導管液中の塩濃度測定が必要であるとみなされた。
    耐塩性に多様性があるとみなされるトルコ共和国のコムギにおける穂培養によるNaClに対する登熟耐性評価のための装置の作成及び実験打ち合わせのために、トルコ共和国のチュクロバ大Nona Bokra学農学部を訪問した。そして、実験協力者とともに次年度における実験に使用する品種の検討、実験方法と手順の打ち合わせ、冷却用の穂培養装置の購入、組み立て、実験装置の作成と準備を行った。

    researchmap

  • イネの収量形質に関わる耐塩性機構と関連遺伝子座の解析

    2016.04 - 2019.03

    日本学術振興会  科学研究費基盤研究(C) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • ダイズ裂皮粒発生機構の分子生物学ならびに組織学的解析

    2013.04 - 2014.03

    タカノ農芸化学研究助成財団 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 耐塩性イネにおけるシアン耐性呼吸の生理学ならびに分子生物学的解析

    2011.04 - 2014.03

    日本学術振興会  科学研究費基盤研究(C) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 塩条件下における作物根の細胞死制御と耐塩性との関係

    2007.04 - 2010.03

    日本学術振興会  科学研究費基盤研究(C) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 作物根における活性酸素の消去能ならびに生成抑制能と耐塩性との関係

    2004.04 - 2006.03

    日本学術振興会  科学研究費若手研究(B) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 呼吸エネルギー消費の解析からみた水稲の生長効率の向上に関する研究

    2001.04 - 2003.03

    日本学術振興会  科学研究費若手研究(B) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • シアン耐性呼吸の制御に関する生産生理学的研究

    Grant number:11760012  1999 - 2000

    日本学術振興会  科学研究費助成事業 奨励研究(A)  奨励研究(A)

    平井 儀彦

      More details

    Grant amount:\2200000 ( Direct expense: \2200000 )

    イネでは光合成産物の約半分が暗呼吸によって消費される。このため、暗呼吸の抑制は作物の物質生産効率を高める上で重要と考えられる。また、植物の呼吸に含まれるシアン耐性呼吸は、エネルギーの生産効率が低く、作物の生産性向上には、この呼吸の抑制が望まれる。シアン耐性呼吸の速度を知るには、植物による酸素同位体分別の測定が唯一の測定法であるが、測定が困難であるため、測定例は極めて少ない。本研究では栄養生長期と登熟期のイネの暗呼吸の品種間差異について部位別に調査し、呼吸抑制の可能性を検討した。さらに、酸素の安定同位体比測定によるシアン耐性呼吸の測定装置を作成し、イネ葉身に含まれるシアン耐性呼吸の割合を調べた。
    飢餓法により栄養生長期の水稲26品種における茎葉部の維持呼吸速度を比較したところ、有意な品種間差異が認められ、最大1.5倍の差があった。飢餓法で維持呼吸速度が低いとされた品種では、強光条件下でも呼吸速度が低かった。栄養生長期に維持呼吸速度の差が大きかった4品種については、登熟期の部位別暗呼吸速度も調べた。その結果、登熟期の維持呼吸速度は栄養生長期とは異なること、葉身と穂の呼吸速度は茎に比較して品種間差異が大きいことがわかった。また、登熟期の水稲では、茎葉重当たりの籾数が大きい個体では、光合成速度が高まり、葉身での非構造性炭水化物の転流コストが低下すること、葉身と茎の呼吸は主に転流に関わっていることが明らかになった。また,イネのシアン耐性呼吸の測定のための阻害剤の処理法が明らかになり,夏期に比較して秋期にはイネ葉身のシアン耐性呼吸の割合は高まることがわかった.以上のことから、イネの呼吸抑制による物質生産効率の向上は、葉身と穂の呼吸が低いことでもたらされると考えられ、特に葉身については個体のシンクを大きくすることが重要であることが明らかになった。

    researchmap

  • 新規固定炭素および新規固定窒素の測定による乾物分配推定法の検討

    1995.04 - 1996.03

    日本学術振興会  科学研究費奨励研究(A) 

    平井儀彦

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • Morpho-physiological studies on gas exclusion system of a crop root relating to salt and drought tolerances

    Grant number:07456009  1995 - 1996

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    HIRAI Yoshihiko

      More details

    Grant amount:\5500000 ( Direct expense: \5500000 )

    It is reported that cavitation, i.e.bubbles in xylem solution produced by negative pessure, prevents water absorption and occurs only in plants which suffer severe drought stress. This suggests a possibility of dissolved-gas exclusion in the process of water absorption in plant roots. In this research, a mechanism of gas exclusion, structural characteristics and gas exclusion ratio in several gases were studied.
    Dissolved-gas content in xylem sap was compared with that in root culture solution by using rice and barley roots. Xylem sap was sampled from the stele of proximal end of a excised root exposed to air- or nitrogen gas-saturated distillled water with 0.3 or 0.5 MPa of hydraulic pressure. As a result, a root has a function to exclude dissolved gas from culture solution in the process of water uptake.
    The gas exclusion rate (1-Gr/Gc, Gr : dissolved-gas content in root xylem, Gc : dissolved-gas content in culture solution) of rice roots which grown under different drought stress conditions was investigated. The gas exclusion rate of a root grown under severe drought stress condition was higher. In those roots, the intense fluorescence in cortical sclerenchyma and endodermis was induced by using a berberine-aniline blue fluorescent staining procedure. This suggest that the gas exclusion rate relate to the component of the root.
    The gas exclusion rate of rice roots exposed oxygen or nitrogen gas-saturated distillled water were investigated. The gas exclusion rate of oxygen gas was higher. This suggest that each gases in culture solution are excluded separately in plant root.

    researchmap

  • Morpho-physiological studies on Na^+ exclusion system of a root under saline stress

    Grant number:05454048  1993 - 1994

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)  Grant-in-Aid for General Scientific Research (B)

    TSUCHIYA Mikio, HIRAI Yoshihiko

      More details

    Grant amount:\3700000 ( Direct expense: \3700000 )

    In order to improve crop productivity under saline condition, it is importnat to identify the plant characters relating to salt tolerance and to strengthen them by breeding or improved cultivation. For example, though rice salt tolerant varieties absorb and accumulate less sodium in a shoot, the characters relating to less absorption of sodium is not clear.
    In this research, a mechanism of Na^+ exclusion, structural characteristics and a easy method for evaluating root capacity of ion exclusion were studied.
    The effect of supplied pressure, temperature, pH,dissolved air content, ion species and metabolic inhibitors on ion exclusion rate of a rice root exposed to salt solution suggested that the ion exclusion in a root was based on the principle of revers osmosis ; with cell layrs of exodermis and endodermis worked as semipermeable membrane, and with negative pressure as a driving force produced by transpriration.
    The difference in Na^+ exclusion rate was found among some species of Gramineae and varieties of rice and barley. From anatomical and chemical analysis, it was indicated that the characteristics of high cellulose content in root and high lignin content inroot and shoot was closely related to high rate of Na^+ exclusion. Moreover, it was suggested that the measurement of stress relaxation curve of a root in salt solution was helpful to easily evaluate root capacityn of ion exclusion.

    researchmap

▼display all

 

Class subject in charge

  • Advances in Plant Science (2024academic year) Prophase  - 火5~6,金5~6

  • Crop Science and Production (2024academic year) Third semester  - 水5~6

  • Course Seminar 1 (2024academic year) 1st and 2nd semester  - 水3

  • Course Seminar 2 (2024academic year) 3rd and 4th semester  - 水3

  • Course Seminar 3 (2024academic year) 1st and 2nd semester  - その他

  • Course Seminar 4 (2024academic year) 3rd and 4th semester  - その他

  • Seminar in Crop Science (2024academic year) Prophase  - その他

  • Seminar in Crop Science (2024academic year) Prophase  - その他

  • Seminar in Crop Science (2024academic year) Late  - その他

  • Seminar in Crop Science (2024academic year) Late  - その他

  • Seminar in Crop Science (2024academic year) Prophase  - その他

  • Crop science 1 (2024academic year) Third semester  - 水1,水2

  • Crop science 2 (2024academic year) Fourth semester  - 水1,水2

  • Crop Production Science (2024academic year) Late  - 月3~4

  • Control in Food Crop Production 1 (2024academic year) 1st semester  - 金3,金4

  • Undergraduate's-level thesis research (2024academic year) 1st-4th semester  - その他

  • Introduction to Applied Plant Science 1 (2024academic year) Third semester  - 火3,火4

  • Introduction to Applied Plant Science 1 (2024academic year) Third semester  - 火3~4

  • Introduction to Applied Plant Science 2 (2024academic year) Fourth semester  - 火3,火4

  • Plant Production Physiology (2024academic year) Late  - その他

  • Advanced Study (2024academic year) Other  - その他

  • Seminars in Special Field of Study 1 (2024academic year) 1st and 2nd semester  - その他

  • Seminars in Special Field of Study 2 (2024academic year) 3rd and 4th semester  - その他

  • Introduction to Agrobiology 2 (2024academic year) Second semester  - 水3,水4

  • Introduction to Agrobiology 2 (2024academic year) Second semester  - 水3~4

  • Crop Science and Production (2024academic year) Third semester  - 水5,水6

  • Advances in Plant Science (2023academic year) Prophase  - 火5~6,金5~6

  • Crop Science and Production (2023academic year) Third semester  - 水5~6

  • Course Seminar 3 (2023academic year) 1st and 2nd semester  - その他

  • Course Seminar 4 (2023academic year) 3rd and 4th semester  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Seminar in Crop Science (2023academic year) Late  - その他

  • Seminar in Crop Science (2023academic year) Late  - その他

  • Seminar in Crop Science (2023academic year) Late  - その他

  • Seminar in Crop Science (2023academic year) Late  - その他

  • Seminar in Crop Science (2023academic year) Late  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Seminar in Crop Science (2023academic year) Prophase  - その他

  • Crop science 1 (2023academic year) Third semester  - 水1,水2

  • Crop science 2 (2023academic year) Fourth semester  - 水1,水2

  • Eco-physiology in Crop Plants (2023academic year) Late  - 月3,月4

  • Crop Production Science (2023academic year) Late  - 月3~4

  • Crop Productivity and Physiological Ecology (2023academic year) Late  - その他

  • Control in Food Crop Production 1 (2023academic year) 1st semester  - 金3,金4

  • Undergraduate's-level thesis research (2023academic year) 1st-4th semester  - その他

  • Introduction to Applied Plant Science 1 (2023academic year) Third semester  - 火3,火4

  • Introduction to Applied Plant Science 1 (2023academic year) Third semester  - 火3~4

  • Introduction to Applied Plant Science 2 (2023academic year) Fourth semester  - 火3,火4

  • Introduction to Applied Plant Science 2 (2023academic year) Fourth semester  - 火3~4

  • Plant Production Physiology (2023academic year) Late  - その他

  • Advanced Study (2023academic year) Other  - その他

  • Specific Research of Science for Bio-Production (2023academic year) Year-round  - その他

  • Specific Research of Science for Bio-Production (2023academic year) Year-round  - その他

  • Seminars in Special Field of Study 1 (2023academic year) 1st and 2nd semester  - その他

  • Seminars in Special Field of Study 2 (2023academic year) 3rd and 4th semester  - その他

  • Introduction to Agrobiology 2 (2023academic year) Second semester  - 水3,水4

  • Introduction to Agrobiology 2 (2023academic year) Second semester  - 水3~4

  • Advances in Plant Science (2023academic year) Prophase  - 火5,火6,金5,金6

  • Crop Science and Production (2023academic year) Third semester  - 水5,水6

  • Crop Science and Production (2022academic year) Third semester  - 水5~6

  • Course Seminar 3 (2022academic year) 1st and 2nd semester  - その他

  • Course Seminar 4 (2022academic year) 3rd and 4th semester  - その他

  • Seminar in Crop Science (2022academic year) Prophase  - その他

  • Seminar in Crop Science (2022academic year) Late  - その他

  • Seminar in Crop Science (2022academic year) Late  - その他

  • Seminar in Crop Science (2022academic year) Late  - その他

  • Seminar in Crop Science (2022academic year) Prophase  - その他

  • Seminar in Crop Science (2022academic year) Prophase  - その他

  • Crop science 1 (2022academic year) Third semester  - 金5,金6

  • Crop science 2 (2022academic year) Fourth semester  - 金5,金6

  • Eco-physiology in Crop Plants (2022academic year) Late  - 月3,月4

  • Crop Productivity and Physiological Ecology (2022academic year) Late  - その他

  • Control in Food Crop Production 1 (2022academic year) 1st semester  - 月1,月2

  • Undergraduate's-level thesis research (2022academic year) 1st-4th semester  - その他

  • Specific Research of Science for Bio-Production (2022academic year) Year-round  - その他

  • Specific Research of Science for Bio-Production (2022academic year) Year-round  - その他

  • Seminars in Special Field of Study 1 (2022academic year) 1st and 2nd semester  - その他

  • Seminars in Special Field of Study 2 (2022academic year) 3rd and 4th semester  - その他

  • Introduction to Agrobiology 2 (2022academic year) Second semester  - 水3,水4

  • Introduction to Agrobiology 2 (2022academic year) Second semester  - 水3~4

  • Crop Science and Production (2022academic year) Third semester  - 水5,水6

  • Crop Science and Production (2021academic year) Third semester  - 水5,水6

  • Introduction to Agricultural Sciences (2021academic year) Fourth semester  - 木5,木6,木7

  • Course Seminar 3 (2021academic year) 1st and 2nd semester  - その他

  • Course Seminar 4 (2021academic year) 3rd and 4th semester  - その他

  • Discovery Guidance [Summer] (2021academic year) Second semester  - 水5~6

  • Seminar in Crop Science (2021academic year) Prophase  - その他

  • Seminar in Crop Science (2021academic year) Late  - その他

  • Seminar in Crop Science (2021academic year) Late  - その他

  • Seminar in Crop Science (2021academic year) Late  - その他

  • Seminar in Crop Science (2021academic year) Prophase  - その他

  • Seminar in Crop Science (2021academic year) Prophase  - その他

  • Crop science 1 (2021academic year) Third semester  - 金5,金6

  • Crop science 2 (2021academic year) Fourth semester  - 金5,金6

  • Eco-physiology in Crop Plants (2021academic year) Late  - 月3,月4

  • Crop Productivity and Physiological Ecology (2021academic year) Late  - その他

  • Control in Food Crop Production 1 (2021academic year) 1st semester  - 月1,月2

  • Undergraduate's-level thesis research (2021academic year) 1st-4th semester  - その他

  • Specific Research of Science for Bio-Production (2021academic year) Year-round  - その他

  • Specific Research of Science for Bio-Production (2021academic year) Year-round  - その他

  • Seminars in Special Field of Study 1 (2021academic year) 1st and 2nd semester  - その他

  • Seminars in Special Field of Study 2 (2021academic year) 3rd and 4th semester  - その他

  • Introduction to Agrobiology 2 (2021academic year) Second semester  - 水5,水6

  • Introduction to Agrobiology 2 (2021academic year) Second semester  - 水5~6

  • Crop Science and Production (2021academic year) Third semester  - 水5,水6

  • Crop Science and Production (2020academic year) Third semester  - 水5,水6

  • Introduction to Agricultural Sciences (2020academic year) Fourth semester  - 木5,木6,木7

  • Course Seminar 3 (2020academic year) 1st and 2nd semester  - その他

  • Course Seminar 4 (2020academic year) 3rd and 4th semester  - その他

  • Discovery Guidance [Summer] (2020academic year) Second semester  - 水5,水6

  • Seminar in Crop Science (2020academic year) Prophase  - その他

  • Seminar in Crop Science (2020academic year) Late  - その他

  • Seminar in Crop Science (2020academic year) Late  - その他

  • Seminar in Crop Science (2020academic year) Late  - その他

  • Seminar in Crop Science (2020academic year) Prophase  - その他

  • Seminar in Crop Science (2020academic year) Prophase  - その他

  • Crop science 1 (2020academic year) Third semester  - 金5,金6

  • Crop science 2 (2020academic year) Fourth semester  - 金5,金6

  • Crop Productivity and Physiological Ecology (2020academic year) Late  - その他

  • Control in Food Crop Production 1 (2020academic year) 1st semester  - 月1,月2

  • Undergraduate's-level thesis research (2020academic year) 1st-4th semester  - その他

  • Specific Research of Science for Bio-Production (2020academic year) Year-round  - その他

  • Specific Research of Science for Bio-Production (2020academic year) Year-round  - その他

  • Seminars in Special Field of Study 1 (2020academic year) 1st and 2nd semester  - その他

  • Seminars in Special Field of Study 2 (2020academic year) 3rd and 4th semester  - その他

  • Introduction to Agrobiology 2 (2020academic year) Second semester  - 水3,水4

  • Crop Science and Production (2020academic year) Third semester  - 水5,水6

▼display all