Influence of pollination specialization and breeding system on floral integration and phenotypic variation in Ipomoea.

摘要: Natural selection should reduce phenotypic variation and increase integration of floral traits involved in placement pollen grains on stigmas. In this study, we examine the role pollinators breeding system evolution by comparing patterns variances covariances 20 Ipomoea species that differ their level pollination specialization pollinator dependence incorporating phylogenetic relatedness. Plants with specialized (i.e., those pollinated one functional group or few morphospecies) displayed less greater than generalist plants. Self-compatible also self-incompatible species. Floral pick up showed attraction. Analytical models indicate both number morphospecies had significant effects although only differences former were after accounting for phylogeny. These results suggest specialist/self-compatible plants experience more consistent generalist/self-incompatible Furthermore, promote rather whole flower.