Lucas Marie-Orleach, Sylvain Glémin, Marie K Brandrud, Anne K Brysting, Abel Gizaw, A Lovisa S Gustafsson, Loren H Rieseberg, Christian Brochmann, Siri Birkeland
Surprisingly little attention has been given to the impact of selfing on speciation, even though selfing reduces gene flow between populations and affects other key population genetics parameters. Here we review recent theoretical work and compile empirical data from crossing experiments and genomic and phylogenetic studies to assess the effect of mating systems on the speciation process. In accordance with theoretical predictions, we find that accumulation of hybrid incompatibilities seems to be accelerated in selfers, but there is so far limited empirical support for a predicted bias toward underdominant loci...
March 19, 2024: Cold Spring Harbor Perspectives in Biology