Akademik Veri Yönetim Sistemi
Open Life Sciences, cilt.20, sa.1, ss.1-17, 2025 (SCI-Expanded, Scopus)
Grape varieties belonging to the Vitis vinifera species are widely grown worldwide, and many of these are susceptible to powdery mildew and downy mildew. However, wild Vitis species are pretty resistant to these diseases. Hybrid genotypes that are resistant or tolerant to diseases can be produced through crossbreeding studies between V. vinifera and other Vitis species. Today, the demand for new table grape varieties, both seedless and disease-resistant or tolerant, has increased. In our study, we scored the resistance of F1 hybrid grape genotypes developed through crossbreeding with different Vitis species to powdery mildew (Erysiphe necator) and downy mildew (Plasmopara viticola) after natural inoculation. Furthermore, both seedless and disease-resistant genotypes were identified using marker-assisted selection (MAS). Disease scoring of 470 hybrid grape genotypes revealed that 31 were highlyresistant tobothpowderymildewanddownymildew. To determine seedlessness, 351 genotypes were screened using the 5U_VviAGL11 SSR marker using MAS, resulting in 136 potential seedless genotypes. Among these possible seedless hybrid grape genotypes, 77 genotypes were determined to be very resistant or resistant to both powdery mildewanddownymildew.Thefruitcharacteristicsofthese 77 hybrid genotypes will be evaluated over the next few years, and they will also be utilized in future breeding studies to develop new varieties suitable for a sustainable viticulture model.