The evolutionary genetics of sexual systems in flowering plants.

  title={The evolutionary genetics of sexual systems in flowering plants.},
  author={Deborah Charlesworth and Brian Charlesworth},
  journal={Proceedings of the Royal Society of London. Series B, Biological sciences},
  volume={205 1161},
Population genetic studies of the evolution of breeding systems in flowering plants are reviewed. The selective advantage of a gene's increasing the selfing rate is stressed. In the evolution of outbreeding mechanisms, some strong disadvantage to selfing must therefore be acting; it is suggested that this disadvantage is inbreeding depression. Populations with no absolute barrier to selfing, and with intermediate levels of self-fertilization, appear to be the most likely starting state for the… CONTINUE READING