| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Outline of Final Research Achievements |
Recent human activity enabled wild plants to move from their indigenous places to other areas in which they are not distributed naturally. Such alien species may hybridize with native congeners, resulting in genetic pollution in gene pools of the latter species. In this study, I investigated natural hybridization between Rumex species native to Japan and their congeneric alien species using flow cytometry and genetic markers.
Based on previous morphological observations, it is known that Rumex longifolius, native species in Japan, often hybridized with the alien species R. obtusifolius and R. crispus. I certified the natural hybridization between R. longifolius and the two alien species by FCM and population genetic analyses. The data suggested that, in addition to F1 hybridization, back-crossings and F2 or later hybridization may have occurred between the native and the alien species. It is very concerned that genetic pollution of the native Rumex by the alien congeners occurs.
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