2013 Fiscal Year Final Research Report
Study on function of low temperature signal on dormancy regulation in deciduous fruit trees
| Project/Area Number |
22380019
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | University of Tsukuba |
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Principal Investigator |
SUGAYA Sumiko 筑波大学, 生命環境系, 教授 (90302372)
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| Co-Investigator(Kenkyū-buntansha) |
GEMMA Hiroshi 筑波大学, 生命環境系, 教授 (70094406)
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| Co-Investigator(Renkei-kenkyūsha) |
SEKOZAWA Yoshihiko 筑波大学, 生命環境系, 助教 (90361310)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 果樹 / 休眠 / 低温 |
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| Research Abstract |
Effects of low temperature on physiology of flower bud during dormancy period were investigated using Japanese pears. Insufficient amount of low temperature during endo-dormancy, bud abortion and necrosis were found in flowering time. Metabolome analysis indicated that metabolites in flower buds of 600CH (chilling hours) and 750CH were different from those in 0CH and 300CH. PCA analysis revealed that phosphoric acids and organic acid contents would be related to chilling. Enzyme activities involved in sugar metabolism are studied during endo-dormancy and effects of hydrogen cyanamide and potassium nitrate were investigated.
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