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Identification et marquage des facteurs génétiques de résistance à la Sharka chez l’abricotier et le Prunus davidiana

Abstract : The Plum pox virus (PPV), the causal agent of the sharka disease, is the most detrimental virus on stone-fruit trees, worldwide. Infected fruits are not marketable. To date, no stone fruit cultivar (peach, apricot, plum) is resistant. However, sources of resistance have been identified and mapped in apricot and Prunus davidiana, a wild peach-related species. Several of the mapped QTL co-localize with candidate genes previously identified. In the present study, resistance in P. davidiana was confirmed in an F2 population and two new QTL were identified. Quantitative analysis of the apricot cultivars ‘Goldrich’ and ‘SEO’ resistance was also performed. Molecular markers targeting these genes were developed as a tool for marker-assisted selection. This study made it also possible to refine boundaries of the genomic region controlling PPV resistance as well as confirming the robustness and stability of the resistance trait in both species: P. davidiana and P. armeniaca.
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  • HAL Id : hal-02650514, version 1
  • PRODINRA : 195563

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David Tricon, Patrick Lambert, Jean Marc Audergon, Thierry Pascal, Guillaume Roch, et al.. Identification et marquage des facteurs génétiques de résistance à la Sharka chez l’abricotier et le Prunus davidiana. Innovations Agronomiques, INRAE, 2013, 27, pp.31-35. ⟨hal-02650514⟩

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