Plants that live in fragmented landscapes, where populations are isolated from each other
and in which long-distance dispersal is essential for colonization of empty sites,
reproduction should be favoured by self-compatibility (Baker's law). Nevertheless,
outcrossing mechanisms, such as self-incompatibility and dichogamy, are common in many
species and are often maintained by inbreeding depression in the fitness of selfed progeny.
Here, we studied the breeding system and the consequences of selfing and sister mating in …