A self-incompatibility system explains high male frequencies in an androdioecious plant.

摘要: Androdioecy is a sexual system in which males co-occur with hermaphrodites, have both male and female function. Stable androdioecy rare nature, theory suggests that it requires sire more than twice as many offspring hermaphrodites. In several members of the olive family (Oleaceae), occurs higher frequencies predicted by theory. Phillyrea angustifolia L., we found high can be maintained natural populations because hermaphrodites belong exclusively to one two self-incompatibility groups, thus, each fertilize only half all pollen recipients. contrast, pollinate Thus, this species, reproductive disadvantage face due loss function offset fact are fully compatible