| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Research Abstract |
By integrating approaches for evaluating floral colour through animal vision, phylogenetic effects on trait evolution, and phylogenetically independent correlations among traits, we conducted a screening search for floral colour change in 219 angiosperms species. We detected (i) a significant phylogenetic signal in the amount of floral colour change; that (ii) the evolution of floral colour change appeared constrained by pigment chemistry; and (iii) a possible association between floral colour change and bee pollination in an evolutionary sense. These results agree well with those from our laboratory experiments, in which we found that color-changing plants were visited by the same bumble-bee foragers more frequently and persistently than non-color-changing ones. In consistent with these results, we further found in field observations that a floral color-changing Weigela species depends more strongly on bee pollinators in reproduction than its non-colour-changing congener.
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