2016 Fiscal Year Final Research Report
Enhanced self-pollination in a domestic herb: enaminations of reproductive interference from alien species and decreased genetic divergence
| 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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| Project Period (FY) |
2013-04-01 – 2017-03-31
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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 |
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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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| Free Research Field |
生態学
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