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Evolution of genetic variation for selected traits in successive breeding populations of maritime pine

hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorBOUFFIER, Laurent
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorRAFFIN, Annie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorKREMER, Antoine
dc.date.issued2008
dc.identifier.issn0018-067X
dc.description.abstractEnDirectional selection impacts a trait distribution by shifting its mean and reducing its variance. The change of variance is of major importance as the response to selection in subsequent generations is highly dependent of the genetic variability available in the population. In this contribution, evolution of genetic variation was investigated through the first breeding populations of the French maritime pine (Pinus pinaster Ait.) breeding program. We considered three populations: P0 (the forest where plus trees were initially selected), G0 (the plus tree population) and G1 (the population composed of trees selected in the progenies of G0). Analyses focused on the following selected traits: total height (H), girth at 1.30 m (D) and stem deviation to verticality (S). More than 150 000 trees from 25 tests of three distinct populations were studied with an individual genetic model. Accurate genetic parameters were obtained by taking all relationships between trees into account. For H and D, we found a strong decrease of the genetic variation from P0 to G0 corresponding to the initial selection of plus trees, which constitutes the base population of the breeding program. Then, despite the second step of selection applied, no appreciable evolution arose from comparisons between G0 and G1 for these traits. For S, the evolution is less significant as phenotypic variation slightly increased, possibly due to changes of silvicultural practices.
dc.language.isoen
dc.publisherNature Publishing Group
dc.subjectPINUS PINASTER AIT.
dc.subjectEVOLUTION
dc.subjectGENETIQUE DES POPULATIONS
dc.subject.enGENETIC VARIATION
dc.subject.enCORRELATION
dc.subject.enINDIVIDUAL MODEL
dc.subject.enBREEDING POPULATION
dc.subject.enPIN MARITIME
dc.title.enEvolution of genetic variation for selected traits in successive breeding populations of maritime pine
dc.typeArticle de revue
dc.identifier.doi10.1038/hdy.2008.41
dc.subject.halSciences du Vivant [q-bio]/Médecine humaine et pathologie
bordeaux.journalHeredity
bordeaux.page156-165
bordeaux.volume101
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-02664223
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02664223v1
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