tailieunhanh - Báo cáo lâm nghiệp: " Natural hybridization between cultivated poplars and their wild relatives: evidence and consequences for native poplar populations"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài:" Natural hybridization between cultivated poplars and their wild relatives: evidence and consequences for native poplar populations" | Ann. For. Sci. 62 2005 601-613 INRA EDP Sciences 2005 DOI forest 2005072 601 Review Natural hybridization between cultivated poplars and their wild relatives evidence and consequences for native poplar populations An Vanden BROECKa Marc VILLARb Erik Van Bockstaelec Jos Van SLYCKENa a Institute for Forestry and Game Management IBW Research Station of the Flemish Community Gaverstraat 4 Geraardsbergen 9500 Belgium b INRA Unite Amélioration Génétique et Physiologie Forestières BP 20619 Ardon 45166 Olivet Cedex France c Department for Plant Genetics and Breeding Agricultural Research Centre Caritasstraat 212 9090 Melle Belgium Department of Plant Production Ghent University Coupure Links 653 9000 Gent Belgium Received 15 June 2004 accepted 21 March 2005 Abstract - It is recognized that introgressive hybridization and gene flow from domesticated species into their wild relatives can have a profound effect on the persistence and evolution of wild populations. Here we review published literature and recent data concerning introgressive hybridization involving numerous species of the genus Populus. First we briefly refer to some concepts and terminology before reviewing examples of natural and anthropogenic hybridization. Second we examine whether natural genetic barriers could limit introgressive hybridization. Threat and possible consequences of anthropogenic hybridization are discussed in order to finally suggest conservation strategies for native poplar populations. review Populus introgression hybridization conservation Résumé - Hybridations entre peupliers cultivés et sauvages exemples et consequences pour les populations naturelles. L introgression et le flux de gènes d espèces domestiquées vers les espèces sauvages peuvent avoir un rôle déterminant sur la dynamique des populations naturelles. Les objectifs de cette revue sont de faire le point de cette problématique chez les peupliers à partir de données bibliographiques et de données récentes sur l .