| Titre : | Genetic variability in wild cherry populations in France. Effects of colonizing processes |
| Titre original: | Variabilité génétique des populations de merisiers en France. Effets des processus de colonisation |
| Auteurs : | Stéphanie Mariette ; M. Lefranc ; UNIVERSITE PARIS XI ORSAY LABORATOIRE D'EVOLUTION ET SYSTEMATIQUE VEGE ; P. Legrand ; CEMAGREF NOGENT SUR VERNISSON RGNO ; D. Taneyhill ; UNIVERSITY OF LEEDS GBR DEPARTMENT OF BIOLOGY ; ENGREF NANCY UNITE DE GENETIQUE DES POPULATIONS D'ARBRES FORESTIERS ; N. Frascaria Lacoste ; N. Machon |
| Type de document : | article/chapitre/communication |
| Année de publication : | 1997 |
| Format : | p. 904-908 |
| Note générale : |
Sigle : CEMAGREF Sigle : RGNO Diffusion tous publics |
| Langues: | = Anglais |
| Mots-clés: | FRANCE ; PRUNUS AVIUM ; VARIABILITE GENETIQUE ; GENETIQUE DE POPULATION ; AGE |
| Résumé : | Isoenzymes were used to evaluate gene diversity and genetic differentiation among six populations of wild cherry (Prunus avium L.) in France. We contrast the genetic characteristics of a population resulting from a recent colonization with those of a much older population of the same species. No significant genetic structure was observed among populations ; in this respect wild cherry does not differ from other forest trees. No founder effects could be detected in the newly colonized population. To explain the results, we discuss classic explanations for the lack of genetic differentiation among populations, including balancing selection and neutral drift/migration. In order to account fo the absence of founder effects, we propose a hypothesis based on the life cycle of forest trees, namely that the length of the juvenile phase reduces the impact of small numbers of initial founders. |
| Source : | Theoretical and applied genetics, vol. 94 |
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| Val de Loire | Nogent | Articles/chapitres/communications | D 4140 | Empruntable | Disponible pour le prêt |
