KUMSHATSKY BELYY - PERSPECTIVE ABORIGENOUS DON GRAPEVINE VARIETY
The purpose of research is the variety study of economically significant economically valuable indicators of the Kumshatsky Belyy variety in comparison with the control, the Sibirkovy variety. The studies were carried out in 2006-2020 at the Don ampelographic collection named after Ya. Potapenko (Rostov Region). The varieties are grafted onto the Kober 5BB stock, grown for covering. The study was carried out according to the methods and GOSTs adopted in viticulture. For most of the agrobiological and uvological parameters, the studied varieties had approximately the same data. The variety Kumshatsky Belyy significantly surpasses the variety Sibirkovy in terms of the average bunch weight (397 and 190 g, respectively) and yield (2 times higher than that of the control variety). Both varieties have an early medium ripening period, which is a positive factor for the northern zone of industrial viticulture in the Russian Federation. The conditions for the yield of the Kumshatsky Belyy variety are 20-24 g/100 cm<sup>3</sup> of sugars in berry juice with a titratable acidity of 5-9 g/dm<sup>3</sup>. The final stage of the variety study is the organoleptic assessment of the products obtained from the variety harvest. The wines were evaluated by the tasting method. Wine from Kumshatsky Belyy was characterized as follows: pale straw color (with a greenish tint), rich aroma, with delicate notes of wild herbs and flowers, turning into taste, full, harmonious taste, not inferior in quality to wine from Sibirkovy variety. The tasting score of both wines was 8.8 points (on a 10-point scale). In 2020, documents were submitted to include the grape variety Kumshatsky Belyy in the Register of Breeding Achievements (for 6 North Caucasian region).