Comparing the population history of Neotropical annual species: The role of climate change and hybridization between Tithonia tubaeformis and T. rotundifolia (Asteraceae).

Abstract excerpt

Historical climate changes and interspecific gene flow have played an important role in shaping the distribution and genetic diversity of the biota in the Neotropics. In this study, we explored the role of both the Pleistocene climate changes and hybridization on the contemporary geographic structure of two Neotropical weedy species: Tithonia tubaeformis and T. rotundifolia. Distribution shifts under past and...

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