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Article dans une revue
Gene flow estimation with microsatellites in a Malagasy seed orchard of Eucalyptus grandis
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
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http://hal.cirad.fr/cirad-00846100
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Soumis le : jeudi 18 juillet 2013 - 15:12:50
Dernière modification le : vendredi 8 octobre 2021 - 16:26:19
Archivage à long terme le : : lundi 21 octobre 2013 - 09:46:40
Contributeur : Mada Webcirad Connectez-vous pour contacter le contributeur
Soumis le : jeudi 18 juillet 2013 - 15:12:50
Dernière modification le : vendredi 8 octobre 2021 - 16:26:19
Archivage à long terme le : : lundi 21 octobre 2013 - 09:46:40
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TAG107_4_gene_flow.pdf
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