ÇUKUROVA INTERNATIONAL AGRICULTURE AND TOURISM CONGRESS November 03-05, 2025 / Yumurtalık, Adana, Türkiye , Adana, Türkiye, 3 - 05 Kasım 2025, ss.48-56, (Tam Metin Bildiri)
Walnut (Juglans regia L.) is an important nut crop worldwide due to its high nutritional value, broad ecological adaptability, and long lifespan. However, the long juvenile period, high genetic diversity, and strong influence of environmental factors on phenotypic traits limit the efficiency of conventional breeding programs. Advances in molecular marker technologies have enabled the integration of marker-assisted selection (MAS) into walnut breeding, allowing for the early identification of individuals with desirable traits and significantly shortening the selection cycle. MAS can be applied to a wide range of traits, including phenological characteristics, nut quality, mineral composition, disease and pest resistance, and tolerance to abiotic stresses. In recent years, the rapid development of next-generation sequencing technologies and genome-wide association studies (GWAS) has facilitated the identification of candidate genes and markers associated with many important traits in walnut. These findings have enhanced the effectiveness of MAS, contributing to its emergence as a key component of modern breeding strategies.
Keywords: Marker-assisted selection, Juglans regia, molecular markers, GWAS, walnut breeding