Evolutionary roles of hybrid zones of the sect. Brachycaryx azaleas in the Fossa Magna Area
| Project/Area Number |
16K07493
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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 |
Biodiversity/Systematics
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| Research Institution | Forest Research and Management Organization |
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Principal Investigator |
Kikuchi Satoshi 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (10353658)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | ミツバツツジ / 交雑帯 / EST-SSR / 分断化選択 / フォッサマグナ地域 / hybrid swarm / SSR / 交雑 / 種分化 / 雑種 / フォッサマグナ |
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| Outline of Final Research Achievements |
Rhododendron sect. Brachycalyx is a diverse plant genus in Japan. Three species distributed in the South Kanto District forms hybrid zones around Mt. Fuji and Izu Peninsula. Genetic analysis revealed three genetic component corresponding with each species, and hybrid swarm in the hybrid zones. In contrast, genetically hybrid individuals sometimes showed flower morphology of pure species. They suggests, in the hybrid zones of the sect. Brachycalyx, divergent selection, positive selection on pure species' traits, may maintain species entities.
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| Academic Significance and Societal Importance of the Research Achievements |
植物においては種間交雑が頻繁に生じ、ときに交雑帯を形成する。近年、こうした交雑帯は、雑種種分化や生殖隔離の強化などを通じ、植物の種分化過程において重要な役割を担っていると考えられている。本研究ではミツバツツジ類交雑帯における分断化選択可能性、種の維持機構を明らかとし、学術的意義が大きい。また、フォッサマグナ地域は地域固有種の宝庫であり、この地域における種分化に焦点を当てた本研究は、地域自然誌にも貢献している。
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Report
(5 results)
Research Products
(3 results)
