Hybridization and Mating System in a Mixed Stand of Sessile and Pedunculate Oak : Genetics of Oaks. IUFRO Proceedings

1993

S. 122-127

18 Lit. Ang.

Unselbständiges Werk

200041655

Patterns of hybridization and of the mating system of Quercus petraea and Quercus robur have been inferred from examination of allozyme variation in 2 cohorts (adults and progeny) of a stand comprised of both species. Differences in allelic frequencies were found in each species between the pollen pool and the adult trees, but the pattern of hybridization was apparently asymmetrical. Quercus petraea and Quercus robur are almost exclusively allogamic, the multilocus outcrossing rate being 0.96 for both species.