AN INTEGRATED APPROACH TO STUDYING THE WALNUT GENE POOL IN SOUTHERN RUSSIAUSING SSR-MARKERS
Keywords:
walnut, gene pool, selection, phenology, SSR genotyping, genetic diversity, late bud break, economically valuable traits, fatty acid compositionAbstract
Walnuts in southern Russia have great potential for commercial cultivation as a sought-after nut crop. However, a number of challenges remain for the development of this horticultural sector. Specifically, a comprehensive approach to breeding practices and the assessment of available regional resources is required to develop new promising varieties. The research team at the North Caucasus Federal Research Center of Horticulture, Viticulture and Wine-making (SKFNCSVV), with the active participation of researchers from Nikitа Botanical Gardens – National Scientific Center of the RAS, Mountain Botanical Garden DFRC RAS and Jalal-Abad Scientific Center, National Academy of Sciences of Kyrgyz Republic is studying the walnut gene pool in southern Russia using both classical phenotypic evaluation methods and SSR genotyping techniques. This paper presents the key results of using DNA marking to study the genetic origin and diversity of walnuts in southern Russia, as well as data comparing phenotypic assessments (leaf emergence timing and fruit fatty acid composition) with SSR loci polymorphism. The information obtained to date allows us to state the prospects for further implementation of genetic analysis based on DNA marking in the breeding practice of walnut crops in the region.
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