Title Alternative Effect of boron deficiency on tip burn and malformed fruit incidence in strawberries
FullText URL srfa_108_005_013.pdf
Author Sesumi, Miho| Yoshida, Yuichi| Kinjo, Akari| Hidaka, Kei| Goto, Tanjuro| Yasuba, Ken-ichiro| Tanaka, Yoshiyuki|
Abstract Boron (B) is an essential micro element for plants and plays important roles in the synthesis and functions of cell wall. B deficiency has been reported as one of the causes of fruit malformation in strawberries. We investigated the effect of B deficiency on flower and fruit development of forced strawberries for two cropping seasons (2015-2017). In the second season, B was resupplied for B-deficient plants and we investigated changes in fruit development. When B-free nutrient solutions were supplied, tip burn began to occur in newly emerging leaves and calyx 2 to 3 months later, and fruit malformation including seedy or only partly developed fruits with undeveloped achenes occurred frequently. However, these deficient symptoms were quickly disappeared by supplying B containing nutrient solutions. In conclusion, B nutrition is closely related to the occurrence of fruit malformation through fertility of pollen and pistils, and also development of receptacle tissue in strawberries. It should be possible to reduce fruit malformation in strawberries by proper control of B nutrition.
Abstract Alternative  B(ホウ素)は植物にとって必須な微量要素であり,イチゴの受精不良果発生要因の1 つである.そこで2015年度と2016年度の2 回にわたりB 欠乏がイチゴの受精不良果発生に及ぼす影響について調査した.また,2016年度はB 欠乏処理後にB 回復処理を行い,その後のイチゴの果実形態の変化についても調査した.その結果,B欠乏処理を行うと蒸散機能の低い新葉や花芽においてチップバーンが発生し,種浮き果や部分不受精を主とした受精不良果が多発した.しかし,B 回復処理を行うことでこれらの症状が改善することが明らかになった.B は受精不良果発生に関係しており,欠乏条件下で根から吸収させると急速に若い成長中の組織に転流することが示されたことから,B 栄養をコントロールすることでB 不足によるイチゴの受精不良果発生を軽減できる可能性があると考えられる.
Keywords floral organs Fragaria × ananassa Duch. pistil fertility receptacle growth seedy fruit
Publication Title Scientific Reports of the Faculty of Agriculture, Okayama University
Published Date 2019-02-01
Volume volume108
Start Page 5
End Page 13
ISSN 2186-7755
language 日本語
File Version publisher
FullText URL srfa_109_021_027.pdf
Author Annah Khatenje Indeche| Yoshida, Yuichi| Miyaji, Daisuke| Goto, Tanjuro| Yasuba, Ken-ichiro| Tanaka, Yoshiyuki|
Abstract The objectives of this study were to (i) determine the optimum number of whole leaves to retain on a tomato plant for effective blossom-end rot (BER) management and (ii) explore the relationship between shoot calcium (Ca) and fruit Ca in non-defoliated plants in two different sized fruit cultivars, a large-fruited cultivar ‘Momotaro fight’ and a medium-fruited cultivar ‘Cindy sweet’. Treatments involved maintaining 18, 15 and 12 leaves on a plant. All lateral shoots were removed regularly throughout the growing period except the shoot closest to the flowering truss in the 18-leaf treatment. At the length of 10cm, these shoots were sampled for real time Ca determination using a hand held Ca2+ meter. In the plants defoliated to 18 leaves, BER was higher in ‘Momotaro fight’ at 10% compared to 2% in ‘Cindy sweet’. Fruit growth rate was significantly increased by defoliation in ‘Momotaro fight’, however no significant difference was observed among treatments in ‘Cindy sweet’. Defoliating to 12 leaves increased daily Ca transport rate by 59% and 37% in ‘Momotaro fight’ and ‘Cindy sweet’, respectively. Defoliating to 12 leaves increased the water-soluble Ca concentration in the distal part of fruit by 34% and 14% in ‘Momotaro fight’ and ‘Cindy sweet’, respectively. In the plants defoliated to 18 leaves where only old yellowish leaves were removed, a significant steady decrease was observed in the concentration of water soluble Ca in the distal part of fruit with increase in truss order. There was a significant linear relationship between water-soluble Ca concentration in the distal part of the fruit and Ca concentration in the lateral shoot of plants defoliated to 18 leaves. We conclude that under moderate water stress by root zone restriction and also certain other BER inductive conditions, defoliation to 12–15 leaves on a tomato plant should be a promising approach for decreasing BER incidence in susceptible large fruit cultivars.
Keywords BER management defoliation water-soluble Ca lateral shoot Ca root zone restriction
Publication Title Scientific Reports of the Faculty of Agriculture, Okayama University
Published Date 2020-02-01
Volume volume109
Start Page 21
End Page 27
ISSN 2186-7755
language 英語
File Version publisher
Author Hata, Naoki| Murakami, Kenji| Yoshida, Yuichi| Masuda, Masaharu| Tanaka, Atsushi| Shikazono, Naoya| Hase, Yoshihiro|
Published Date 2006-02
Publication Title 岡山大学農学部学術報告
Volume volume95
Issue issue1
Content Type Departmental Bulletin Paper
FullText URL HJ88_1_1.pdf
Author Yoshida, Yuichi|
Published Date 2019-01-31
Publication Title The Horticulture Journal
Volume volume88
Issue issue1
Publisher Japanese Society for Horticultural Science
Start Page 1
ISSN 21890102
NCID AA12708073
Content Type Others
language 英語
OAI-PMH Set 岡山大学
File Version publisher
DOI 10.2503/hortj.88.1
Web of Science KeyUT 000457292200001
Related Url isVersionOf https://doi.org/10.2503/hortj.88.1
Author Tanaka, Yoshiyuki| Hara, Motohito| Goto, Tanjuro| Yoshida, Yuichi| Yasuba, Ken-ichiro|
Published Date 2017-02-01
Publication Title Scientific Reports of the Faculty of Agriculture, Okayama University
Volume volume106
Content Type Departmental Bulletin Paper
Author Yoshida, Yuichi| Tanimoto, Keiichiro|
Published Date 1999-02
Publication Title 岡山大学農学部学術報告
Volume volume88
Issue issue1
Content Type Departmental Bulletin Paper
Author Goto, Tanjuro| Yoshida, Yuichi|
Published Date 2003-02
Publication Title 岡山大学農学部学術報告
Volume volume92
Issue issue1
Content Type Departmental Bulletin Paper
Author Yoshida, Yuichi| Morimoto, Yukari|
Published Date 2010-02-01
Publication Title 岡山大学農学部学術報告
Volume volume99
Issue issue1
Content Type Departmental Bulletin Paper
Author Yoshida, Yuichi| Hirose, Yasuhisa| Morimoto, Yukari| Goto, Tanjuro|
Published Date 2011-02-01
Publication Title 岡山大学農学部学術報告
Volume volume100
Content Type Departmental Bulletin Paper
Author Kinjoa, Akari| Hanada, Atsushi| Yoshida, Yuichi| Goto, Tanjuro| Yasuba, Ken-ichiro| Tanaka, Yoshiyuki| Yoshida, Atsuko|
Published Date 2017-02-01
Publication Title Scientific Reports of the Faculty of Agriculture, Okayama University
Volume volume106
Content Type Departmental Bulletin Paper
Author Yoshida, Yuichi| Shingai, Aya| Ooyama, Mitsuo| Murakami, Kenji| Goto, Tanjuro|
Published Date 2013-02-01
Publication Title 岡山大学農学部学術報告
Volume volume102
Content Type Departmental Bulletin Paper
Author 吉田 裕一| 松野 大樹| 後藤 丹十郎| 高田 圭太|
Published Date 2010-04-01
Publication Title 岡山大学農学部センター報告
Volume volume32
Content Type Departmental Bulletin Paper
Author Inazumi, Daichi| Yoshida, Yuichi| Goto, Tanjuro| Murakami, Kenji|
Published Date 2013-02-01
Publication Title 岡山大学農学部学術報告
Volume volume102
Content Type Departmental Bulletin Paper
FullText URL bfsc_040_pre.pdf
Author Yoshida, Yuichi|
Publication Title Bulletin of the Field Science Center, Faculty of Agriculture, Okayama University
Published Date 2018-04-01
Volume volume40
ISSN 0910-8742
language 日本語
Copyright Holders 岡山大学農学部
File Version publisher
Author Yoshida, Yuichi|
Published Date 2016-04-01
Publication Title Bulletin of the Field Science Center, Faculty of Agriculture, Okayama University
Volume volume38
Content Type Others
Author Yoshida, Yuuichi|
Published Date 2008-04-01
Publication Title 岡山大学農学部センター報告
Volume volume30
Content Type Others
Author Yoshida, Yuuichi|
Published Date 2009-04-01
Publication Title 岡山大学農学部センター報告
Volume volume31
Content Type Others
Author 吉田 裕一|
Published Date 2010-04-01
Publication Title 岡山大学農学部センター報告
Volume volume32
Content Type Others
Author 吉田 裕一|
Published Date 2011-04-01
Publication Title 岡山大学農学部センター報告
Volume volume33
Content Type Others
FullText URL bfsc_039_pre.pdf
Author Yoshida, Yuichi|
Publication Title Bulletin of the Field Science Center, Faculty of Agriculture, Okayama University
Published Date 2017-04-01
Volume volume39
ISSN 0910-8742
language 日本語
Copyright Holders 岡山大学農学部
File Version publisher