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Research Abstracts Online
January - December 2011

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University of Minnesota Twin Cities
College of Biological Sciences
College of Food, Agricultural, and Natural Resource Sciences
Department of Plant Biology

PI: David Moeller

Speciation and Mating Systems Evolution in the Genus Clarkia

Mating systems are among the most labile characteristics of flowering plants, with transitions frequently occurring among populations or in association with speciation. The frequency of mating system shifts has made it difficult to reconstruct historical evolutionary dynamics unless transitions have been very recent. These researchers are examining molecular and phenotypic variation to determine the polarity, timescale, and causes of a transition between outcrossing and self-fertilization in sister subspecies of Clarkia xantiana. This work includes phylogenetic analyses as well as coalescent-based population genetic and phylogeographic analyses. The researchers are using these methods to estimate divergence times and patterns of population genetic structure.

Group Members

Erica L. Beckman, Staff
Justin Iverson, Staff
James Pettengill, Research Associate