UVOLOGICAL ASSESSMENT OF TABLE AND SEEDLESS GRAPEVINE VARIETIES IN THE COLLECTION IN 2021

Abstract

The paper presents the results of a study of the uvological indicators of table and seedless grapevine varieties growing in the Don ampe-lographic collection named after Ya.I. Potapenko (Novocherkassk, Rostov re-gion) in 2021. The varieties were studied in grafted culture (rootstock Kober 5BB). Plant-ing scheme was 3.0×1.5 m without irrigation. The study of grapevine varieties was carried out using methods generally accepted in viti-culture and State Standards. The object of the research were 18 table and seedless grapevine varieties of different origin and ripening peri-od. According to the sugar content of berry juice, the best varieties were Einset seedless, Talisman, Shilohvostyj, Himrod. The titrata-ble acidity of the most varieties was medium or low. The varieties with large clusters ‒ Valentina, Talisman, Vostorg, Aku-Aku, Bo-gotyanovsky; the largest berries had varieties Bogotyanovsky, Talisman, Nizina, Valentina, Rochefort. The highest average berry weight had varieties ‒ Bogotyanovsky (9.9 g), Talis-man (8.2 g), Nizina (7.7 g), Rochefort and Dolchaty (7.6 g). Among the seedless culti-vars, the largest berries were found in the Einset seedless variety (2 g). Table varieties received high tasting scores: Bogotyanovsky (8.9 points), Rochefort (8.7 points), Zarya Nesvetaya (8.6 points), Talisman, Valentina, Aku-Aku (8.5 points); among the seedless ones - Arsenievsky (8.9 points) and Einset seedless (8.3 points). According to the results of the studies, table varieties ‒ Bogo-tyanovsky, Rochefort, Talisman, Valentina ‒ were pointed out as the best according to a set of uvological indicators (tasting assess-ment of fresh grapes, bunch and berry sizes, berry weight, crop conditions); among seed-less varieties ‒ Arsenievsky and Einset seed-less.