Genetic variation in flowering phenology and avoidance of seed predation in native populations of Ulex europaeus. - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Journal of Evolutionary Biology Année : 2010

Genetic variation in flowering phenology and avoidance of seed predation in native populations of Ulex europaeus.

Résumé

The genetic variation in flowering phenology may be an important component of a species' capacity to colonize new environments. In native populations of the invasive species Ulex europaeus, flowering phenology has been shown to be bimodal and related to seed predation. The aim of the present study was to determine if this bimodality has a genetic basis, and to investigate whether the polymorphism in flowering phenology is genetically linked to seed predation, pod production and growth patterns. We set up an experiment raising maternal families in a common garden. Based on mixed analyses of variance and correlations among maternal family means, we found genetic differences between the two main flowering types and confirmed that they reduced seed predation in two different ways: escape in time or predator satiation. We suggest that this polymorphism in strategy may facilitate maintain high genetic diversity for flowering phenology and related life-history traits in native populations of this species, hence providing high evolutionary potential for these traits in invaded areas.

Dates et versions

hal-00464939 , version 1 (18-03-2010)

Identifiants

Citer

Anne Atlan, Myriam Barat, Agnès Schermann-Legionnet, Louis Parize, Michèle Tarayre. Genetic variation in flowering phenology and avoidance of seed predation in native populations of Ulex europaeus.. Journal of Evolutionary Biology, 2010, 23 (2), pp.362-371. ⟨10.1111/j.1420-9101.2009.01908.x⟩. ⟨hal-00464939⟩
131 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More