| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2014: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Outline of Final Research Achievements |
Genetic diversity of Nymphoides peltata, an aquatic plant widely distributed in Japan except Hokkaido, was very low and had no geographical structure of genetic variation. Each of the two populations of Notogawa in Lake Biwa and Tomitahama in Lake Kasumigaura possessed the greater part of the genetic diversity in Japan. In the view point of complimentary, conserving one of the two populations above with a population in Kahokugata or a population in Saga Plain could be effective for keeping the genetic diversity. In Lake Kasumigaura, only small area of the communities of floating plants was found based on the photos taken by US army in 1947. Nymphoides peltata grows on the wet land habitats both natural and cultivated and supposed to greatly change its growing places and distribution ranges in short period under the human activities.
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