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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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | ラベンダー / ジベレリン / 低温遭遇 / 低温要求性 / 生合成酵素遺伝子 / 受容体遺伝子 |
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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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Report
(4 results)
Research Products
(1 results)
