| Project/Area Number |
13575011
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
系統・分類
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
SETOGUCHI Hiroaki Kyoto Univ., Fac. Integrated Human Studies, Associate Prof., 総合人間学部, 助教授 (70206647)
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| Co-Investigator(Kenkyū-buntansha) |
TOKUOKA Toru Kyoto Univ., Fac. Integrated Human Studies, Associate Prof., 総合人間学部, 助手 (90303792)
MOMOHARA Arata Chiba Univ., Fac. Horticulture, Associate Prof., 園芸学部, 助教授 (00250150)
YUKAWA Tomohisa National Science Museum, Tsukuba Botanical Garden, Curator., 筑波研究資料センター, 研究官 (50280524)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥10,900,000 (Direct Cost: ¥10,900,000)
Fiscal Year 2002: ¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 2001: ¥5,700,000 (Direct Cost: ¥5,700,000)
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| Keywords | Phytogeography / eastern Asia / Sino-Japanese region / Pieris / Coptis / Hydrangea / Tricyrtis / アジサイ / ブナ / オウレン / アセビ |
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| Research Abstract |
We investigated phylogeography on the genus of Hydrangea, Coptis, Pieris, Cymbidium, Tricyrtis and Lagerstroemia and discussed on the historical biogeographical implications for angiosperms in the Northern hemisphere. Results indicate the same biogeographic pattern, i.e., origin and speciation in eastern Asia with subsequent expansion into North America. Therefore the all taxa examined in the present study showed asymmetrical disparsal from the Old World to the New World via Bering Land bridge during the Miocene (ca. 10 Ma) to the early Pliocene (ca. 5 Ma). The noteworthy finding was the general biogeograhic pattern in plant taxa restricted to the Sino-Japanese region that all lineages have been restricted ancestrally to the Yunnan & Sichuan Province in China and secondarily expanded their ranges via dispersal. The lineages distributed from the Ryukyu and Japanese Archipelagos are monophyletic with few DNA sequence divergences.
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