Fine-scale spatial genetic structure of eight tropical tree species as analysed by RAPDs

Degen Bernd, Caron Henri, Bandou Eric, Maggia Laurent, Chevallier Marie-Hélène, Leveau Antoine, Kremer Antoine. 2001. Fine-scale spatial genetic structure of eight tropical tree species as analysed by RAPDs. Heredity, 87 : 497-507.

https://doi.org/10.1046/j.1365-2540.2001.00942.x

Article de revue ; Article de revue à facteur d'impact

Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
527466.pdf
Télécharger (431kB) | Demander une copie

Résumé : The fine-scale spatial genetic structure of eight tropical tree species (Chrysophyllum sanguinolentum, Carapa procera, Dicorynia guianensis, Eperua grandiflora, Moronobea coccinea, Symphonia globulifera, Virola michelii, Vouacapoua americana) was studied in populations that were part of a silvicultural trial in French Guiana. The species analysed have different spatial distribution, sexual system, pollen and seed dispersal agents, flowering phenology and environmental demands. The spatial position of trees and a RAPD data set for each species were combined using a multivariate genetic distance method to estimate spatial genetic structure. A significant spatial genetic structure was found for four of the eight species. In contrast to most observations in temperate forests, where spatial structure is not usually detected at distances greater than 50 m, significant genetic structure was found at distances up to 300 m. The relationships between spatial genetic structure and life history characteristics are discussed.

Mots-clés Agrovoc : marqueur génétique, Chrysophyllum, ressource génétique, génétique des populations, Symphonia, virola, divergence génétique

Mots-clés complémentaires : Dicorynia guianensis, Carapa procera, Moronobea, Vouacapoua americana, Virola michelii, Symphonia globulifera, Eperua grandiflora

Classification Agris : F30 - Génétique et amélioration des plantes

Auteurs et affiliations