著者

福田 一郎 堀井 雄治郎

出版者

日本植物分類学会

雑誌

分類 : bunrui : 日本植物分類学会誌 (ISSN:13466852)

巻号頁・発行日

vol.4, no.2, pp.117-123, 2004-08-31

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About 1,000 plants of Trillium camschatcense (2n=2x=10) are growing well in the Sashimaki marshland (5 hectare area) near Lake Tazawa in Tohoku district. These plants are located in the most southern limit of their distributions (Trillium camschatcense). 13 plants of Trillium apetalon (2n=4x=20) also grow there. Only 3 plants of Trillium yezoense (2n=3x=15) have been found growing in this area. By means of chromosome analysis of cold-induced banding karyotype, it has been confirmed that their plants are hybrid between T. camschatcense and T. apetalon.