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Quelle place pour la sélection génomique chez les plantes pérennes ?

Abstract : All breeding programs for perennial plants share a common challenge: a very long cycle combining age at testing and age at reproduction. In total, it can sum up to more than a decade. In forest and fruit trees, spatial dimensions and evaluation of economic criteria often limit the phenotyping possibilities and increase evaluation costs. Breeders are also concerned about genotype-environment interactions due to the longevity of perennial plants and the diversity of environmental conditions they encounter. As a consequence, genomic selection is today of particular interest to breeders of perennial plants as it aims at accelerating breeding cycles and increasing selection efficiency. The recent development of whole-genome sequencing provides reference sequences for numerous perennial species subject to breeding programs. Nevertheless, substantial efforts remain to be done to obtain SNPs in sufficient numbers to cover these genomes with a high-enough density. Indeed, in most of these species, linkage disequilibrium falls quickly at short distances. Such a limit explains why the first assessments of genomic selection in these species are based, most of the time, on training populations with small effective sizes.
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Submitted on : Friday, June 5, 2020 - 7:03:41 PM
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  • HAL Id : hal-02800270, version 1
  • PRODINRA : 368246

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Catherine Bastien, David Cros, Patrice This. Quelle place pour la sélection génomique chez les plantes pérennes ?. Sélection génomique : Théorie et mise en oeuvre en relation avec les programmes d'amélioration, 6, Formasciences, FPN, INRA, 2016, Ecoles-chercheurs INRA, 2-7380-1387-2. ⟨hal-02800270⟩

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