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Université de Fribourg

Genetic analysis of post-mating reproductive barriers in hybridizing European Populus species

Macaya-Sanz, David ; Suter, Leonie ; Joseph, Jeffrey A. ; Barbará, Thelma ; Alba, N. ; González-Martínez, S. C. ; Widmer, Alex ; Lexer, Christian

In: Heredity, 2011, vol. 107, p. 478–486

Molecular genetic analyses of experimental crosses provide important information on the strength and nature of post-mating barriers to gene exchange between divergent populations, which are topics of great interest to evolutionary geneticists and breeders. Although not a trivial task in long-lived organisms such as trees, experimental interspecific recombinants can sometimes be created through...

Université de Fribourg

Polymorphism of postmating reproductive isolation within plant species

Scopece, Giovanni ; Lexer, Christian ; Widmer, Alex ; Cozzolino, Salvatore

In: Taxon, 2010, vol. 59, no. 5, p. 1367-1374

Speciation can be viewed as the evolution of reproductive isolation between formerly interbreeding populations. Recent years have seen great advances in our understanding of the genetic mechanisms underlying postmating reproductive isolation during plant speciation. Nevertheless, little is known about the early stages of species divergence and the evolution of reproductive isolation at the...