Early evolution in a hybrid swarm between outcrossing and selfing lineages in Geum.

ABSTRACT: Although often considered as evolutionary dead ends, selfing taxa may make an important contribution to plant evolution through hybridization with related outcrossing lineages. However, there is a shortage of studies examining the evolutionary dynamics of hybridization between outcrossing and selfing taxa. On the basis of differential pollinator attractiveness, production and competitive ability of pollen, as well as levels of inbreeding depression, we predict that the early products of hybridization between outcrossing and selfing lineages will be F1s and first-generation backcrosses sired mainly by the outcrossing lineage, together with selfed F2s containing a limited genetic contribution from the outcrosser. These predictions were tested using amplified fragment length polymorphism and

SUBMITTER: Ruhsam M 

PROVIDER: S-EPMC3183954 | biostudies-literature | 2011 Sep

REPOSITORIES: biostudies-literature