Gene flow estimation with microsatellites in a Malagasy seed orchard of Eucalyptus grandis

G. Chaix 1 S. A. Gerber 2 V. Razafimaharo 1 P. Vigneron 3 D. Verhaegen 3 S. Hamon 4
1 Cirad-forêt/Fofifa
2 INRA, Laboratoire de gé nétique et amé lioration des arbres forestiers
3 Cirad-Foret
4 IRD Montpellier
Abstract : Eucalyptus grandis has a mixed-mating repro- ductive system. Malagasy Eucalyptus seed orchards were established 15 years ago with two aims both based on panmixia: open-pollinated seed production and genetic improvement. The panmixia hypothesis has never been confirmed in the seed orchard. From a seedling seed- orchard stand comprising 349 trees and using data obtained with six selected microsatellite markers, pater- nity analysis was performed for 724 offspring collected on 30 adult trees. Paternity assignment, based on exclu- sion procedures and likelihood-ratio method, was achieved with high accuracy; the exclusion probability value was 0.997. The outcrossing rate was very high (96.7%). More than 50% of potential male trees (199 out of 349) in the seed orchard contributed to pollination for 440 offspring of 30 progenies (8.6% of the basic population). The pollination rate from outside the seed orchard was high (39.2%), but might be due to the small size of this seed orchard. This study showed that "panmixia-like pollination" can be assumed
Keywords : Madagascar Microsatellite Seed orchard Paternity analysis Pollen flow Eucalyptus grandis
Type de document :
Article dans une revue
TAG Theoretical and Applied Genetics, Springer Verlag, 2003, 107, pp.705-712
Liste complète des métadonnées

Littérature citée [31 références]  Voir  Masquer  Télécharger
http://hal.cirad.fr/cirad-00846100
Contributeur : Mada Webcirad <>
Soumis le : jeudi 18 juillet 2013 - 15:12:50
Dernière modification le : mercredi 29 novembre 2017 - 16:02:52
Document(s) archivé(s) le : lundi 21 octobre 2013 - 09:46:40

Fichier

TAG107_4_gene_flow.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : cirad-00846100, version 1

Collections

FORET-BIO | CIRAD | IRD | INRA

Citation

G. Chaix, S. A. Gerber, V. Razafimaharo, P. Vigneron, D. Verhaegen, et al.. Gene flow estimation with microsatellites in a Malagasy seed orchard of Eucalyptus grandis. TAG Theoretical and Applied Genetics, Springer Verlag, 2003, 107, pp.705-712. 〈cirad-00846100〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

273

Téléchargements de fichiers

451

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD