Faculty Profiles - FUKUDA Fumio

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技術相談室－昨年多発した果梗離脱果（エボ抜け果）の発生要因を教えてください－

福田文夫

果樹 64 ( 2 ) 54 - 55 2010

果樹の生理⑧－整枝・せん定－

福田文夫

果樹 64 ( 12 ) 28 - 31 2010

園芸学会春季大会報告

福田文夫

果樹 63 ( 6 ) 21 - 23 2009

Yields and berry quality of 'Pione' grapevine grown in high density planting and fertigation systems

KURAFUJI Y., KAWADA M., OGORO A., ONO T., FUKUDA F., KUBOTA N.

7 ( 1 ) 86 - 86 2008.3

技術相談室－今年のモモの成熟が遅れたのはなぜですか？－

福田文夫

果樹 62 ( 10 ) 46 - 48 2008

Effects of gibberellic acid application to fruit on the suppression of fruit drop in 'Shimizu Hakuto' peach

FUKUDA F., IMATO K., KUBOTA N.

6 ( 2 ) 148 - 148 2007.9

Factors inducing dormancy of grapevine buds and physiological aspects of the buds during the dormant period

POTJANAPIMON C., FUJIOKA F., FUKUDA F., KUBOTA N.

6 ( 2 ) 460 - 460 2007.9

Relationship between chilling hours and breaking bud dormancy in cuttings from 'Kyoho' and 'Pione' grapevines grown in different regions

KUBOTA N., POTJANAPIMON C., FUJII Y., KUNUGI Y., KOBAYASHI K., YAMASHITA Y., FUJISHIMA H., ONO T., KURAFUJI Y., OGORO A., FUKUDA F.

6 ( 2 ) 459 - 459 2007.9

モモ‘紅清水’における赤肉果と水浸状果肉褐変果発生の栽培年次,着果位置および収穫日による差異

高田大輔, 福田文夫, 久保田尚浩

園芸学会雑誌別冊 75 ( 2 ) 623 2006.9

Effects of pruning levels and soil volume on occurrence of flesh disorder of peach fruit in young trees

TAKATA D, KUNO T, FUKUDA F, KUBOTA N

園芸学会雑誌. 別冊, 園芸学会大会研究発表 75 ( 2 ) 469 - 469 2006.9

Effects of temperature and chemicals on breaking bud dormancy in grapes at different dormant stages

POTJANAPIMON C., FUKUDA F., KUBOTA N., ONO T., OGORO A.

75 ( 2 ) 483 - 483 2006.9

モモ'紅清水'における落果および種子発育に及ぼす種子への傷害およびジベレリンとパクロブトラゾールの注入の影響

福田文夫, 近阪昌之, 久保田尚浩

岡山大學農學部學術報告 = Scientific report of the Faculty of Agriculture, Okayama University ( 95 ) 63 - 68 2006.2

Language：Japanese Publisher：岡山大學農學部

モモ'紅清水'において種子への傷害が誘起する落果と種子発育との関係を検討した。種子への傷害（傷害処理）として果実の縫合線と逆の位置から種皮まで外径2.5mmのドリルを満開後40、50、60、72および80日に挿入した。落果や種子発育と関係するジベレリンとパクロブトラゾールの種子への注入（注入処理）も傷害処理後に行った。傷害処理、注入処理ともに、満開後40-60日処理には処理した果実が全て落下したのに対し、72および80日処理では、いずれも落下しなかった。60日処理では、果実および種子の新鮮重がともに処理3日後に減少し始めた。胚乳と胚の形態を満開後60、72および80日処理間で比較した。胚乳および胚の成長は60日処理では処理3日後に停止したが、72日処理では胚が処理5日後まで成長し続けた。胚乳と胚の細胞核の崩壊は、処理時の胚長が5mm未満であった60日処理では、処理3日後に生じた。一方、処理時の胚長が約8mmであった72日処理では、胚乳における細胞核の崩壊は60日処理と同様の傾向で生じたが、胚の細胞核は崩壊しなかった。60日処理において合点側吸器の形態を観察したところ、吸器は傷害処理や注入処理によって直ちに収縮し始め、正常な合点側吸器を持つ種子の割合は急速に低下した。これらの結果に基づいて、種子への傷害による種子の退化過程ならびに胚の成長と落果との関係を考察した。

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Effects of Fruit Position in Canopy, Harvest Date and Bagging on Occurrence of Reddish-pulp Fruit in Peach (Crop Production & Cropping Type)

Takata Daisuke, Fukuda Fumio, Kubota Naohiro

Hort. Res. (Japan) 5 ( 1 ) 33 - 37 2006

Language：Japanese Publisher：THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE

The effects of fruit position in the canopy, harvest date and covering fruit with bags of different colors on the development of reddish-pulp, skin and flesh anthocyanin concentrations and flesh firmness were investigated in 'Takei Hakuho' peach (Prunus persica Batsch) fruit. In the first half of harvesting, the rate of reddish-pulp development was higher in fruit harvested from the upper part of the trees than in those from the lower part, whereas in the last half of harvesting the rate of reddish-pulp development had no relationship with fruit position in the canopy. There was no significant difference in the rate of reddishpulp development among unbagged fruit and those in white and orange bags, However, fruits covered with orange and black bags showed a lower rate of reddish-pulp development at harvest. However, when fruits were stored for four days at room temperature the rate of reddish-pulp development was as high as that in fruit covered with white bags. The relationship between skin and flesh anthocyanin concentrations and flesh firmness was investigated in fruits covered with bags of different colors. There was significant negative correlation (P<0.001) between flesh anthocyanin concentration and flesh firmness and there was no significant correlation observed between skin anthocyanin concentration and flesh firmness. The relationship between skin and flesh anthocyanin concentration in fruit harvested from 'Shimizu Hakuto' peach trees varied largely among the orchards. These findings indicate that anthocyanin accumulation in peach skin is significantly affected by light conditions, such as fruit position in canopy and modification of light quantity through bagging with different colors, although the bags had little or no effect on anthocyanin accumulation in the flesh.

DOI： 10.2503/hrj.5.33

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Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10471391

モモ‘紅清水’における赤肉果と水浸状果肉褐変果発生の栽培年次,着果位置および収穫日による差異

高田大輔, 福田文夫, 久保田尚浩

園芸学会中四国支部研究発表要旨 ( 45 ) 3 2006

Anatomical Changes in Cells and Chalazal Haustorium of Endosperm with Respect to Physiological Fruit Drop in 'Shimizu Hakuto' Peach

Fukuda Fumio, Yoshimura Ryuji, Matsuoka Hiromi, Umeda Akiko, Asano Yoshimi, Kubota Naohiro

Journal of the Japanese Society for Horticultural Science 75 ( 5 ) 365 - 371 2006

Language：English

We investigated the morphology of seed, particularly of the endosperm of intact and abscising 'Shimizu Hakuto' peach (Prunus persica Batsch) subjected to different fruit thinning levels for four years. The objective was to study the anatomical basis for physiological fruit drop which occurs from end of Stage 2 to beginning of Stage 3 of fruit growth. The percentage of physiological fruit drop was significantly higher (P=0.05) in trees subjected to heavy fruit thinning (HFT) than in those subjected to light fruit thinning (LFT) or standard fruit thinning (SFT). The mean endosperm length in fruit which dropped at the peak of physiological fruit drop from trees under HFT was equal to that of intact fruit collected at 65 days after full bloom (DAFB); the mean embryo length in dropped fruit was shorter than that in the intact fruit collected at the same time. Endosperm and embryo cells in dropped fruit showed typical necrotic symptoms, such as cells with shrunken cytoplasm and collapsing cell nucleus. Collapsing cell nucleus in the endosperm of the intact fruit collected from trees under HFT began at 66 DAFB that corresponded with the time when the endosperm stopped growing. Morphology of chalazal haustorium was observed in the on-tree fruit collected from the beginning to the middle of Growth Stage 2 in trees under HFT and SFT. Although most chalazal haustoria had reached the chalaza at the beginning of Growth Stage 2 in both fruit thinning levels, those in most of HFT fruit exhibited abnormal shrinking at 54 DAFB. These results indicate that a series of events take place in the seeds predestined to drop. That is, after certain factor(s) that cause shrinking of the chalazal haustorium and retardation of embryo growth to occur, assimilated reserves in the endosperm cannot be translocated to the embryo because of shrinkage of the chalazal haustorium. Finally, necrosis of embryo is induced.

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Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10470824

Relationship between Fruit Enlargement and Seed Development with Respect to Physiological Fruit Drop in 'Shimizu Hakuto' Peach

Fukuda Fumio, Yoshimura Ryuji, Matsuoka Hiromi, Kubota Naohiro

Journal of the Japanese Society for Horticultural Science 75 ( 3 ) 213 - 218 2006

Language：English

The relationships between fruit enlargement and development of seed components, particularly embryo were investigated in 2000 and 2001 with respect to physiological fruit drop by using 'Shimizu Hakuto' peach (Prunus persica Batsch) trees subjected to different fruit thinning levels. As the standard fruit thinning (SFT), the first thinning was conducted in early May to 2,3-fold levels as final crop load (about 70 leaves per fruit at harvest), followed by the second thinning in early June to the final level. For heavy fruit thinning (HFT), fruit density was adjusted in early May to the final crop load and for light fruit thinning (LFT), in early June to 1.5-fold of the final crop load. The percentage of physiological fruit drop was significantly higher (P<0.05) in trees under HFT than in LFT and SFT in both years. The percentage of split-pit fruit was significantly higher (P<0.05) in HFT than LFT in 2000 but there was no significant difference between HFT and SFT in 2001. At the end of Growth Stage 2, fruit weight was proportional to seed size, but it was inversely related to embryo size in 2000 under both HFT and LFT. The mean embryo length of HFT fruit was two-thirds of that of LFT, although the different thinning levels had no significant effect on endosperm length. There was no difference in embryo length between those of split-pit and non-split-pit fruit at early Growth Stage 2. However, at the late Growth Stage 2 in HFT trees, the embryos diverted into two types: normal and very small (<3mm); this diversion was not observed in SFT. In HFT trees, there was an inverse relationship between fruit weight and dry matter accumulation of seed components. The larger the fruit, the smaller was the dry matter accumulation in the nucellus and endosperm. Thus, the increased rate of physiological fruit drop in HFT trees might be attributed to the reduction of photosynthates partitioned to the seed because of rapid fruit enlargement which leads to inferior embryo development.

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Other Link： http://dl.ndl.go.jp/info:ndljp/pid/10470770

モモ‘武井白鳳’の果実の赤肉発生とフェノール蓄積に及ぼすホウ素散布の影響

高田大輔, 福田文夫, 久保田尚浩

園芸学会雑誌別冊 74 ( 2 ) 649 2005.10

Relationships between embryo growth and accumulation of sugars and amino acids in inner seed tissues and abnormality of haustorium in 'Shimizu Hakuto' peach fruit

FUKUDA Fumio, ENOMOTO Masayuki, KUBOTA Naohiro

74 ( 2 ) 272 - 272 2005.10

Characterizations of "reddish-pulp", a physiological disorder of peach fruit

Daisuke Takata, Kentaro Tagami, Fumio Fukuda, Naohiro Kubota

Journal of the Japanese Society for Horticultural Science 74 ( 5 ) 407 - 413 2005.9

Language：Japanese

Five peach (Prunus persica Batsch) cultivars were characterized for the "reddish-pulp" physiological disorder in which the flesh of mature fruit undergoes a pink to red discoloration. Fruit exhibiting this disorder had high contents of anthocyanin and phenolic compounds. The degree of "reddish-pulp" development had a negative significant correlation (P&lt
0.001) with flesh firmness and had no clear relationship with fruit weight and total soluble solids content. Furthermore, there was no significant difference in the rate of "reddish-pulp" development among cultivars and orchards. However, there was a large difference in the rate of "reddish-pulp" occurrence
with some trees almost 100% of the fruits exhibited the symptom, whereas fruits from other trees expressed a very low percentage, irrespective of the orchard. The degree of "reddish-pulp" in the fruit harvested from trees showing a high rate of discoloration increased after storage at 25°C compared to the fruit harvested from trees showing little or no symptoms of the disorder. The annual difference in both trees, showing high and low rates of "reddish-pulp" occurrence, was small. However, once "reddish-pulp" fruit appeared in a tree, such trees produced fruit with "reddish-pulp" in subsequent years. When the dry weight contents of roots from trees with high and low rates of "reddish-pulp" occurrence were compared in autumn, the former weighed less than the latter probably because it had fewer roots, especially fine roots of less than 2 mm in thickness. Based on these observations the possible cause(s) of the development of "reddish-pulp" in peach fruit is discussed.

DOI： 10.2503/jjshs.74.407

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せん定強度の違いがモモの赤肉果発生ならびに¹³C光合成産物の転流と分配に及ぼす影響

高田大輔, 福田文夫, 久保田尚浩

園芸学会雑誌別冊 74 ( 1 ) 264 2005.4

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