Abstract
COMPORTAREA LA ATACUL DE RAPĂN ŞI FĂINARE A HIBRIZILOR F1 DE MĂR PROVENIŢI DIN ÎNCRUCIŞĂRI DIRECTE ŞI RECIPROCE
Highlights
Apple scab, caused by Venturia inaequalis (Cke.) Wint., and powdery mildew, caused by Podosphaera leucotricha (Ell. et Everh.) Salm., are the main fungal diseases which are controlled with considerable difficulties and costs, but with long-term consequences and negative effects on the environment and on the fruit quality (Berriea and Xua, 2003; Holb, 2009; Sestraș et al, 2011)
Response of F1 hybrids to apple scab attack The hybrid combinations with the lowest average of notes for apple scab attack derived from the following crosses: 'Crimson Crisp' x 'Topaz' and 'Topaz' x 'Crimson Crisp' (Figure 2)
The results showed that ‘Topaz’ and ‘Crimson Crisp’ cvs. transmitted the best response to apple scab attack to their seedlings
Summary
Apple scab, caused by Venturia inaequalis (Cke.) Wint., and powdery mildew, caused by Podosphaera leucotricha (Ell. et Everh.) Salm., are the main fungal diseases which are controlled with considerable difficulties and costs, but with long-term consequences and negative effects on the environment and on the fruit quality (Berriea and Xua, 2003; Holb, 2009; Sestraș et al, 2011)Intraspecific hybridization is one of the most used method to create variability in apple breeding. Obtaining new resistant and valuable genotypes is even more challenging as most of the economical traits of interest in apple are of quantitative nature determined by polymorphism (Dan et al, 2015). Resistant apple cultivars are necessary for organic and integrated fruit growing system, since many of the highly appreciated commercial cultivars are very susceptible to apple scab and powdery mildew attack (Sestraș et al, 2011). This study aimed to analyze the resistance response to apple scab and powdery mildew attack of F1 hybrids obtained inside artificial crosses (direct and reciprocal) using donors for fruit quality and for diseases resistance
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