Sexual specialization and inbreeding avoidance in the evolution of dioecy

@article{Freeman2008SexualSA,
  title={Sexual specialization and inbreeding avoidance in the evolution of dioecy},
  author={D. Carl Freeman and Jon Lovett Doust and Ali El-Keblawy and Kathleen J. Miglia and E. Durant McArthur},
  journal={The Botanical Review},
  year={2008},
  volume={63},
  pages={65-92}
}
Dioecy has evolved independently, many times, among unrelated taxa. It also appears to have evolved along two contrasting pathways: (1) from hermaphroditism via monoecy to dioecy and (2) from hermaphroditism via gynodioecy to dioecy. Most dioecious plants have close cosexual relatives with some means of promoting outcrossing (e.g., herkogamy, dichogamy, self-incompatibility, or monoecy). To the extent that these devices prevent inbreeding, the evolution of dioecy in these species cannot… CONTINUE READING