2013/01/01 by David Tricon, Patrick Lambert, Tricon, David +9
Agricultural and Biological Sciences · #Plant Physiology and Cultivation Studies #Postharvest Quality and Shelf Life Management #Insect behavior and control techniques
paper · doi:10.17180/ascb-zj06
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.