2015 Fiscal Year Final Research Report
Elucidation of cold requirement in Lavandura X intermedia
| Project/Area Number |
25450048
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Horticultural science
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | ラベンダー / ジベレリン / 低温遭遇 |
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| Outline of Final Research Achievements |
The following things on flowering of Lavandula × intermedia related to cold-requirement were shown clearly. 1. Flower bud differentiation was determined by temperature and duration of cold treatment and day-length after cold treatment. 2. GA metabolome showed only the early 13-hydroxylation pathway and expression of GA was essential for flower bud differentiation. 3. GA showed promotive effect on flower bud differentiation under insufficient duration of cold treatment, but did not show any promotive effect under sufficient duration of cold treatment. 4. GA20oxidase-like, GA3oxidase-like, GA2oxidase-like and GID1-like genes were isolated and their nucleotide sequences were partially determined. However, any relationship between the genes and cold- requirement could not be confirmed. 5. Cold treatment of more than 12 weeks at 5 ℃ and day-length of more than 12 hours will be at least needed for flower bud differentiation.
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| Free Research Field |
園芸学
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