Research Projects -
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Establishment of cut flower production of delphinium by clarifing the flowering control mechanism under root zone restriction
Grant number：22K05615 2022.04 - 2026.03
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)
後藤 丹十郎, 北村 嘉邦
Grant amount：\4030000 （ Direct expense: \3100000 、 Indirect expense：\930000 ）
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花き類の高濃度CO2への順化反応の機構解明とそれに基づくCO2施用の効率化
Grant number：22H02340 2022.04 - 2025.03
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)
稲本 勝彦, 土井 元章, 後藤 丹十郎
Grant amount：\14170000 （ Direct expense: \10900000 、 Indirect expense：\3270000 ）
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ダリア露芯花の発生メカニズムの解明に基づく露芯花発生低減方法の開発
Grant number：19K06019 2019.04 - 2022.03
日本学術振興会 科学研究費助成事業 基盤研究(C) 基盤研究(C)
後藤 丹十郎, 田中 義行
Grant amount：\4290000 （ Direct expense: \3300000 、 Indirect expense：\990000 ）
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Analyses of negative factors affecting the cut flower productivity of the rose plant community for optimizing the greenhouse environmental conditions by using system dynamics models
Grant number：18H02197 2018.04 - 2022.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
Motoaki DOI
Grant amount：\17550000 （ Direct expense: \13500000 、 Indirect expense：\4050000 ）
To establish a methodology for optimizing the greenhouse environment control, a system dynamics plant model predicting the flowering date, yield and quality of arching roses was developed and negative factors affecting the cut flower productivity were elucidated by analyzing the errors between the measured value and the predicted value. As the error factors of carbon gain by bending shoots, overestimation of dark respiration during the night hours and photosynthetic rates during the morning hours of fair days and underestimation of photosynthetic rates during summer resulting from the seasonal changes of LAI were elucidated. It was necessary to set both high and low threshold temperatures when the days to flowering were predicted by using real temperatures. The carbon dioxide concentration was a factor affecting the photosynthetic rate but high carbon dioxide acclimatization occurred depending on the sink activities of harvest shoots.
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Grant number：15K14822 2015.04 - 2018.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research Grant-in-Aid for Challenging Exploratory Research
Nishimura Shin-ichi
Grant amount：\3900000 （ Direct expense: \3000000 、 Indirect expense：\900000 ）
In this research, recycle system of dredged sludge in lakes, canals and ponds has been proposed to proceed the reuse of the sludge. Firstly, the ordinary filter-press machine is improved by adding several process, and the optimum procedure of dehydration, air blow, vacuum, and desiccation has been identified. Secondly, recycle methods of the dredged sludge dehydrated and desiccated as geo-material were examined. In results, the desiccation could increase the strength of the sludge improved by the stabilizer. Since the deposited sludge includes large amount of fertilizer, the dredged sludge can be supposed to be effective as agricultural material. In consequence of planting tests, it has been clarified the desiccation temperature affects the growth of the plants.
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Grant number：15K18640 2015.04 - 2018.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B) Grant-in-Aid for Young Scientists (B)
Tanaka Yoshiyuki, YOSHIDA Yuichi, GOTO Tanjuro, YASUBA Kenichiro
Grant amount：\4160000 （ Direct expense: \3200000 、 Indirect expense：\960000 ）
Capsinoids are low-pungent capsaicinoid analogues in chili pepper fruits. They exhibit health-promoting properties in humans similar to capsaicinoids, but do not cause a nasty burning sensation, encouraging their application in foods. The aim of this study was to identify genetic factors to increase capsinoid in Capsicum.
In this study, we identified novel mutant alleles of putative aminotransferase (pAMT) to enhance capsinoid biosynthesis. In addition, we compared an extremely pungent cultivar with other cultivars of different pungency levels. The results indicated that the capsaicinoid biosynthesis in the pericarp contributes to the higher capsaicinoid and its analogs concentrations in fruits, and multiple capsaicinoid biosynthetic genes were strongly expressed exclusively in the pericarp of the extremely pungent cultivar. The results will be useful for pungency and capsinoid breeding. -
Grant number：26292016 2014.04 - 2018.03
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)
Doi Motoaki
Grant amount：\15990000 （ Direct expense: \12300000 、 Indirect expense：\3690000 ）
To discuss an optimization strategy of the rose plant architecture and the environment control, a growth simulation model of greenhouse rose vegetation was developed. Using the light-temperature-photosynthesis curve generated by measuring the photosynthetic and respiration rates under fluctuating environments, we constructed a system dynamics (SD) model which predicts daily carbon gain. In addition to this, the distribution ratios of photosynthates produced by the bending shoots to other organs were evaluated by 13CO2 feeding experiments.
From the results of the SD model validation, it was found that both photosynthesis during daytime and respiration during nighttime are over-estimated and that the error becomes larger in winter. The course of these prediction errors was discussed. -
Grant number：25892020 2013.08 - 2015.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up Grant-in-Aid for Research Activity Start-up
TANAKA Yoshiyuki, YOSHIDA Yuichi, GOTO Tanjuro, YASUBA Kenichiro
Grant amount：\2730000 （ Direct expense: \2100000 、 Indirect expense：\630000 ）
The pungent component in Capsicum fruits is capsaicinoid. The understanding of the controlling capsaicinoid biosynthesis is important to allow the breeding and improvement of peppers. The aim of this study was to identify major genes controlling pungency in Capsicum. In this study, we identified non-functional alleles of putative aminotransferase (pAMT) as the main and most frequent gene controlling low pungency in C. chinense. pAMT catalyzes the formation of precursor in the capsaicinoid biosynthetic pathway. In addition, we found a non-pungent C. baccatum accession. It will be useful for future breeding of sweet peppers.
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Grant number：24658204 2012.04 - 2015.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research Grant-in-Aid for Challenging Exploratory Research
NISHIMURA Shin-ichi, FUJISAWA Kazunori, MURAKAMI Kenji, SHUKU Takayuki, SHUKU Takayuki
Grant amount：\4030000 （ Direct expense: \3100000 、 Indirect expense：\930000 ）
The recycle system for a large amount of sludge based on the dehydration and the desiccation are developed in this research. Firstly, the filter-press machine has been newly developed, in which the cycles of the consolidation, suction, and air-permeation are added to the ordinary seepage consolidation process. Secondly, the improvement method of soil for the reuse has been developed. The possibility for the practical use of desiccated soil as the construction or agricultural material, has been verified.
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Effect of intermittent low-temperature storage on flower induction of horticultural plants
Grant number：23380019 2011.04 - 2014.03
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)
YOSHIDA Yuichi, GOTO Tanjuro, NAKANO Yoshihiro, MURAKAMI Kenji
Grant amount：\18590000 （ Direct expense: \14300000 、 Indirect expense：\4290000 ）
Flower inductive effect of intermittent low-temperature storage enhanced by improved carbohydrate nutrition of strawberry plants achieved by active photosynthesis under the natural light. In strawberry, an FT homolog was expressed before floral specification genes. Intermittent low-temperature storage also enhanced flowering or vegetative growth in Eustoma, Primula and tomato.
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Grant number：21580034 2009 - 2011
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)
GOTO Tanjyuro, NANBA Kazuhiko
Grant amount：\4940000 （ Direct expense: \3800000 、 Indirect expense：\1140000 ）
Factor of yellow-leaf-spot occurrence induced by high temperature and irradiation in chrysanthemum were investigated. Yellow-leaf-spot was decreased by chitosan or titanium dioxide. ABA treatment increased yellow-leaf-spot. Thus, a possibility that reactive oxygen species cause yellow-leaf-spot occurrence increases. On artificial environment under high temperature and humidity, yellow-leaf-spot could be occurred. Graphics processing could define yellow-leaf-spot degree which made yellow area or color the index.
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Studies on physiologycal injury of chrysanthemum
2000
Grant type：Competitive
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キクの生理障害に関する研究
2000
Grant type：Competitive
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Building up the non-culture medium cellular seedling system-practical application of the cellular sheet seedlings
Grant number：11556004 1999 - 2000
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).
MIZUTA Youichi, ODA Masayuki, TOKUHIRO Kouzi, HAYASHI Takahiro, DATE Shyuichi, GOTO Tanjurou
Grant amount：\13500000 （ Direct expense: \13500000 ）
The root zone of cell seedlings were limited capacity of cell. Therefore The transplant proper time is shorten, it is easy to elongate, and aging. There is a fault that it is not easy to apply with big crops of crops and the seedling with a bad germination rate. The cell sheet method of raising seedlings of the no medium designed in this laboratory is handy and light weight.
Because moisture and liquid manure are always supplied in the cell sheet method, the faults of the above-mentioned cell seedling is canceled. Especially, the weight when transported, becomes about 1/2-1/3 of the cell trays. Moreover, taking root and the early growth of the drying condition in summer were extremely better, and higher than usual cell seedlings also that amount, even cell sheet seedlings had no medium and were imaged it was difficult that transplanting to the outdoors field This cell sheet : in putting to practical use. (1) It is not easy to break after it is necessary to put by one hole and seedlings transplants though the cotton cloth and the pdyester unwoven cloth, etc. were used as upper protection to protect the rhizosphere. (2) Th peeling off of seedlings is easy in transportation. (3) It was necessary to supply phosphorus dividing to control algae of the rhizosphere and the generation of mold in the cell seedling, therefore usual hydroponics media could not used.
Surface of the cell sheet coated by a dry peat-moss, and the generation of algae and the mold of the rhizosphere was able to be controlled, and the problem of (1) and (3) was solved if surface of the cell sheet were shaded. (2) was solved by putting the size of the box and the cell sheet together from the cell tray more strictly when transported, and because changing the material of the sheet from 'Love Mat U' to 'Tetoron No200', root pasting with the sheet were improved. A suitable thing was not able to be found though the result of the above-mentioned was receivedr, cheap materials with equal to 'Tetoron No200' a performance were retrieved. However, materials have almost understood the influence is not exerted from the process in the growth of the plant. In the experiment in the Kyoto University Kyoto farm, cell sheet seedlings. The seedlings promoted in Kyoto University were sent to various places and grew under various field. Under hydroponics and bench, cell sheet seedlings grew better than cell tray sheedrings. Under other field, cell sheet seedlings grew little less than cell tray sheedrings. It seemed that the cell sheet had the possibility of practical use enough above. -
Quality evaluation of chrysanthemum cut flower using image processing techniques and Kalman neuro
Grant number：10660243 1998 - 1999
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)
KONDO Naoshi
Grant amount：\3400000 （ Direct expense: \3400000 ）
The grading or quality evaluation of chrysanthemum cut flowers is traditionally performed by experts trained in the grading based on their skilled sensibility. In this study, an attempt was made to draw some quantitative criteria from the traditional evaluation process by scoring the quality of chrysanthemum cut flowers. The results revealed that there were significant differences between two sets of scores given by two experts respectively. There were also large difference between the first evaluation and the second one. The measurements were taken for cut flower length, length between flower and the uppermost node, main stem diameter, curvature of main stem, average internode length, area of leaves and stems, and sizes of leaves in order to investigate the relationship between physical features of cut flowers and experts' decision criteria. It seemed that the most of measured physical features were related to experts' decision criteria. No straight applications of these physical features to the grading parameters seem to be possible because there was not enough statistical substantiality. There must be some complex combinations between physical features that make experts decide the quality of individual cut flower. One of the well known functions of neural network is a classifier that can handle this type of problem. Base on the results, several features were selected for input parameters of neural networks whose output parameter was a human evaluation score. The neural networks were trained by KNT (Kalman Neuro Training) method. From the results, it was observed that output value satisfactorily agreed the human evaluation score. The error was less than the human error resulted from the human double check procedure. It was also confirmed that the evaluation by the neural networks with several appropriate features was effective.
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Water Culture on Ornamental Crops Using Eutrophic Water in the lake of Kojima
Grant number：08459018 1996 - 1998
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)
KAGEYAMA Yoshihiro, MOURI Kentaro, GOTO Tanjyuro
Grant amount：\6500000 （ Direct expense: \6500000 ）
Eutrophic water in the lake of Kojima contained nutrient elements for the growth of crops, existing its at low concentration. In previous study, we cleared that the low concentration of nutrients in culture solution was able to grow normally many ornamental crops, if the solution supplied continuously to roots system in a water culture.
In this study, we evaluated optimum species of horticultural crops for water culture using the eutrophic water by water culture system of continuous water flowing method. In other subject, we developed a floating culture system for bedding flowers getting about on the lake surface by solar energy.
(1) In screening test evaluating optimum horticultural crops, several crops were ranked four grades as followed ; A (growing excellently) 4 species of bedding flowers, 3 species of cutting flowers and 1 specie of vegetable ; B (growing normally) 3 species of bedding flowers, 2 species of cutting flowers and 2 species of vegetables ; C (growing partial dead) : 2 species of bedding flowers and 2 species of cutting flowers ; D (not growing) : 7 species of bedding flowers and 5 species of cutting flowers.
(2) Floating culture system "Moving flower bed" was consisted of styrene foam plate for planting crops, two solar cells, a screw and control device for moving direction. Bedding flowers were grown normally during three months by the system in the eutrophic water. -
セル成型トレイを用いた栄養系花卉の苗生産システム
Grant number：08760026 1996
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)
後藤 丹十郎
Grant amount：\1000000 （ Direct expense: \1000000 ）
1.前年度に引き続き、キク、カ-ネーション、シュクコンカスミソウについてIBA処理した穂を恒温室(15から20℃)で10日間処理したところ、キク、カ-ネションでは発根までの日数が短くなったが、シュクコンカスミソウでは処理中に腐敗する個体が多かった。これは植物体が処理中に放出するエチレンの濃度が高いためであった。
2.根域容量を10、30、100、300、1000mlに設定した自作の水耕装置に発根直後のキクを定植し、根域容量がキクの初期生育に及ぼす影響を調べた。根域に養水分が十分に供給できれば根域容量が10mlでも他の容量と同様に生長した。収穫時(定植25日後)の植物体内の無機要素含有量は処理区間に差は見られなかった。
3.培養土をつめた30、100、300、1000mlの容量のコンテナにキクを定植し、灌水点をpF2.0とし、毎回液肥で灌液したところ、定植10日目には処理区間に差が見られはじめ、根域容量が小さいほど生育が低下した。収穫時(定植25日後)の植物体内の無機要素含有量は30、100mlの根と茎で窒素とリンの割合が低かった。 -
アスパラガス1年生株の生理生態的特性,特に休眠について
Grant number：03760021 1991
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)
後藤 丹十郎
Grant amount：\900000 （ Direct expense: \900000 ）
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セル苗および鉢物の養水分管理
Grant type：Competitive
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固化培地を用いた植物生産
Grant type：Competitive
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機械移植用苗生産に関する研究
Grant type：Competitive
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花卉類における養水分管理に関する研究
Grant type：Competitive
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Studies on water and nutrient management in floriculture
Grant type：Competitive
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Water and nutrient management of cell transplants and pot culture
Grant type：Competitive
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Studies on Seedling Production for Transplanted Machine.
Grant type：Competitive