Antagonism between local dispersal and self-incompatibility systems in a continuous plant population.

ABSTRACT: Many self-incompatible plant species exist in continuous populations in which individuals disperse locally. Local dispersal of pollen and seeds facilitates inbreeding because pollen pools are likely to contain relatives. Self-incompatibility promotes outbreeding because relatives are likely to carry incompatible alleles. Therefore, populations can experience an antagonism between these forces. In this study, a novel computational model is used to explore the effects of this antagonism on gene flow, allelic diversity, neighbourhood sizes, and identity by descent. I confirm that this antagonism is sensitive to dispersal levels and linkage. However, the results suggest that there is little to no difference between the effects of gametophytic and sporophytic self-incompatibility systems (GSI a

SUBMITTER: Cartwright RA 

PROVIDER: S-EPMC2743200 | biostudies-literature | 2009 Jun

REPOSITORIES: biostudies-literature