| Project/Area Number |
25430199
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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 |
Conservation of biological resources
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| Research Institution | The University of Shiga Prefecture (2014-2016)
Osaka City Institute of Public Health and Environmental Sciences (2013) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
内貴 章世 琉球大学, 熱帯生物圏研究センター, 准教授 (30393200)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 代替繁殖戦略 / 閉鎖花 / 虫媒花 / 訪花性昆虫 / 遺伝的多様性 / 外来種 / 繁殖干渉 / 種間送粉 / 花粉管伸長 / 近縁在来種 / 訪花昆虫 / アロザイム分析 / 自家受粉率 / 繁殖生態 / 送粉生態 / 自家受粉 / 繁殖戦略 |
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| Outline of Final Research Achievements |
Some plants have closed-flowers (cleistogamous flowers), which exclusively engage self-pollination, besides ordinary open-flowers. We investigated the functions of closed-flowers in a common weed plant, Lamium amplexicaule, especially the interspecific relationships with pollination insects and closely related species. First, it is revealed that the pollination of L. amplexicaule relies on a few bee species, such as Anthophora pilipes and abundance of these bees has declined in many regions. Second, a series of allozyme analyses revealed that many populations of L. amplexicaule have reproduced dominantly via self-pollination. Finally, experiments using potted plants demonstrated that closely-related species, such as L. album var. barbatum and L. purpureum, induced closed-flowers to L. amplexicaule via some allelochemicals.
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