Phylogeographical study for Patrinia villosa (Valerianaceae), having conspicuous infraspecific polyploidy

2016 Fiscal Year Final Research Report

• Project/Area Number: 25440203
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biodiversity/Systematics
• Research Institution: The University of Tokyo
• Principal Investigator: Ikeda Hiroshi 東京大学, 総合研究博物館, 准教授 (30299177)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 系統地理 / 倍数性 / オトコエシ / オトコオミナエシ / 生物地理 / DNA / 染色体

Outline of Final Research Achievements

Cytological and phylogeographical studies were performed for Patrinia villosa (Thunb.) Juss. (Valerianaceae), which showed conspicuous infraspecific polyploidy. After analyzing with samples collected in Japan and Korea, we confirmed a series of polyploids from diploid (2n=22) to dodecaploid (2n=132). We also recognized three genetical groups, 1) a group distributed in western Kyushu District and Korea, with 2n=22, 2) a group distributed from Hokkaido and Shiga Prefecture, with 2n=44, and 3) a group distributed westwards from Kinki District to Kyushu District, with 2n=66～132. Patrinia x hybrida Makino, which had been believed to be a hybrid origin between P. villosa and P. scabiosaefolia Fisch. ex Trev., was not an interspecific hybrid, but a result of infraspecific hybridization between cytological races in different ploidal levels.

Free Research Field

植物分類学