| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
We analysed reproductive isolation, reproductive interference, and character displacement in Isodon umrosus with the short corolla and I. effusus with the long corolla. Artificial pollination between two species revealed that seed production and seed germination were very low, suggesting that hybridization between these two species is maladaptive. Seed production of wild plants in sympatric population was lower than that in allopatric population, indicating that the reproductive interference between the species occur in the field. In a sympatric site (Kanoto-iwa), flowering phenology differed between the species, which may play a role in avoiding their reproductive interference. The molecular phylogenetic analysis based on nuclear DNA sequences supported the previous taxonomic treatment of the genus at the species level.
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