IRHS, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France; present address: INRA, UMR 1095, Genetics, Diversity and Ecophysiology of Cereals, 63100, Clermont-Ferrand, France.
IRHS, Agrocampus-Ouest, INRA, Université d'Angers, SFR 4207 QuaSaV, 49071, Beaucouzé, France.
Plant Dis. 2018 Nov;102(11):2220-2223. doi: 10.1094/PDIS-11-17-1759-RE. Epub 2018 Aug 20.
Genetic resistance is a useful strategy to control plant disease, but its effectiveness may be reduced over time due to the emergence of pathogens able to circumvent the defenses of the plant. However, the pyramiding of different resistance factors in the same plant can improve the effectiveness and durability of the resistance. To investigate the potential for this approach in apple to control scab disease we surveyed scab incidence in two experimental orchards located at a distance of more than 300 km planted with apple genotypes carrying quantitative resistance and major gene resistance alone or in combination. Our results showed that the effectiveness of pyramiding in controlling scab was dependent on the site and could not be completely explained by the effectiveness level of the resistances alone.
遗传抗性是控制植物病害的一种有效策略，但由于能够规避植物防御的病原体的出现，其有效性可能会随着时间的推移而降低。然而，在同一植物中叠加不同的抗性因子可以提高抗性的有效性和耐久性。为了研究这种方法在苹果上控制黑星病的潜力，我们调查了位于 300 多公里以外的两个实验果园中的黑星病发病率，这些果园种植的苹果基因型单独或组合携带定量抗性和主基因抗性。我们的结果表明，在控制黑星病方面，叠加的有效性取决于地点，不能仅通过抗性的有效性水平来完全解释。
