| Project/Area Number |
19580039
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Nihon University |
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Principal Investigator |
KUBOTA Satoshi Nihon University, 生物資源科学部, 准教授 (60328705)
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| Project Period (FY) |
2007 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | ファレノプシス / サイトカイニン / ジベレリン / 開花 / 形態形成 / 花茎発生 |
|---|
| Research Abstract |
Mechanisms of flowering by low temperature of Phalaenopsis were investigated in terms of interaction between cytokinin (CK) and gibberellin (GA). CK concentration in axillary bud rose at 14 days after low temperature treatment (Low), and initiation of axillary bud development followed close on this peak. Peak of GA concentration in the bud and spiking from the bud appeared at 28 days and at 26 days after Low, respectively. Application of exogenous CK and GA induced spiking from axillary bud under non-flowering condition, high temperature. In addition, GA application induced flowering at apical meristem regardless of temperature conditions. Thus, it was suggested that flowering of Phalaenopsis was induced by GA. The floral induction of apical meristem of Phalaenopsis was found for the first time in the world. Because this phenomenon might contribute for production of novel plants which is valuable plant for horticulture, a patent was submitted.
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