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Selection against recombinant hybrids maintains reproductive isolation in hybridizing Populus species despite F1 fertility and recurrent gene flow

Christe, Camille ; Stölting, Kai N. ; Bresadola, Luisa ; Fussi, Barbara ; Heinze, Berthold ; Wegmann, Daniel ; Lexer, Christian

In: Molecular Ecology, 2016, p. -

Natural hybrid zones have proven to be precious tools for understanding the origin and maintenance of reproductive isolation (RI) and therefore species. Most available genomic studies of hybrid zones using whole or partial genome resequencing approaches have focused on comparisons of the parental source populations involved in genome admixture, rather than exploring fine-scale patterns of...

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Phylogeography of Populus alba (L.) and Populus tremula (L.) in Central Europe: secondary contact and hybridisation during recolonisation from disconnected refugia

Fussi, Barbara ; Lexer, Christian ; Heinze, Berthold

In: Tree Genetics & Genomes, 2010, vol. 6, no. 3, p. 439-450

The central aim of this paper is to clarify the picture of postglacial recolonisation and the reconstruction of refugia of Populus alba (L.) and Populus tremula (L.) in the light of hybridisation of the two species. We focussed our study on Central and Southeastern Europe including reference samples from Spain, Sweden and Northern Africa.We investigated 414 individuals of 26 populations using...

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