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Integration of molecular markers and phenotypic resistance to Venturia inaequalis in apple


Citation :- Integration of molecular markers and phenotypic resistance to Venturia inaequalis in apple. Res. Crop. 27: 280-286
AIGUL MADENOVA, AIGERIM SEISENOVA, SAULE KAZYBAYEVA, DINARA KALDYBAEVA, ZHANAR KADIRSIZOVA, BALNUR KABYLBEKOVA AND GALYMBEK KANAT madenova.a@mail.ru
Address : Kazakh Fruit and Vegetable Research Institute, Almaty 050060, Kazakhstan
Submitted Date : 7-04-2026
Accepted Date : 25-05-2026

Abstract

Apple (Malus domestica Borkh.) productivity is limited by apple scab caused by Venturia inaequalis. This study aimed to identify resistant cultivars using marker-assisted selection (MAS) and field evaluation. A total of 45 genotypes were analyzed with seven markers linked to Rvi genes. The CH-vf1 marker (Rvi6) was most frequent, while AD13, Z13, and Vf2ARD showed low amplification. Cluster analysis (UPGMA) revealed weak structuring but identified potential gene pyramiding in Braeburn, Pinova, and Saltanat. Field evaluations (2023–2025) confirmed high resistance in Kamila, Diana, Saltanat, Williams Pride, and Honeycrisp. A weak correlation between markers and disease severity suggests polygenic resistance and environmental influence. These results support the use of gene pyramiding in apple breeding programs in Kazakhstan.
 

Keywords

Apple apple scab marker-assisted selection Rvi genes SSR SCAR 


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