Effects of sex change in maple trees on forest regeneration
Project/Area Number |
20580159
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Forest science
|
Research Institution | Osaka City University |
Principal Investigator |
NANAMI Satoshi 大阪市立大学, 理学(系)研究科(研究院), 准教授 (70326247)
|
Co-Investigator(Kenkyū-buntansha) |
ITOH Akira 大阪市立大学, 大学院理学研究科, 教授 (40274344)
|
Project Period (FY) |
2008-04-08 – 2013-03-31
|
Project Status |
Completed (Fiscal Year 2013)
|
Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
Keywords | 森林 / 生態 / 個体群 / 繁殖 / 更新動態 / 性表現 / 樹木 / 雌雄異株 / 性転換 / 遺伝子流動 / カエデ属 / マイクロサテライト解析 / 実生 / 成長速度 / 種子散布 |
Research Abstract |
The spatial genetic structure, gene flow through pollination and relatedness between parents of seeds were investigated in an Acer rufinerve population, a dioecious tree. The efficiency of the sex expression, dioecy, was evaluated by estimating selfing rate of bisexual A. rufinerve trees. The A. rufinerve population has a significant spatial genetic structure. The spatially close trees tended to have a similar genotypes. The short-distant gene flows through pollination were dominant, and selfing rate of bisexual trees was high (75%). It means self incompatibility was low in this species. The sex expression, dioecy, would be efficient in A. rufinerve to avoid selfing and inbreeding depression.
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Report
(7 results)
Research Products
(4 results)