Interspecific hybridisation and interaction with cultivars affect the genetic variation of Ulmus minor and Ulmus glabra in Flanders ; L'hybridation interspécifique et l'interaction avec les cultivars agit sur la diversité génétique d'Ulmus minor et d'Ulmus glabra en Flandres

[Departement_IRSTEA]Territoires ; International audience ; Interspecific hybridisation and gene flow from cultivated plants may have profound effects on the evolution of wild species. Considering the cultural history and past use of Ulmus minor and Ulmus glabra trees in Flanders (northern Belgium), we investigated the extent of human impact on the genetic variation of the remaining, supposedly indigenous elm populations. We therefore examined the rate of interspecific hybridisation, which is expected to be higher under human influence, the occurrence of clones within and among locations, the p... Mehr ...