Promising red technical grape varieties of AZOSVIV selection

The paper presents the results of studies of red technical grape varieties of late ripening at the Anapa Zonal Experimental Station of Vine and Winemaking (AZOSViV). These varieties are Krasnostop Anapa, Krasnostop AZOS, Dostojnyj. An agrobiological assessment and biochemical analysis of these varieties are given. Agrobiological assessment of the studied varieties was carried out on the ampelographic collection based on the results of many years of research. Biochemical studies were carried out in the laboratory on the content of sugars and acids in the must of berries. The control sample was taken from Cabernet Sauvignon (a classic red late grape variety of technical use). The ultimate goal is a further recommendation to bring these varieties into production. As a result of research, it was found that the Krasnostop Anapa grape variety annually has high stable yields (on average 120 kg/ha) and high sugar accumulation rates - 22.2-23.0 g/cm3. The same was recorded in the variety Krasnostop AZOS, where the annual yield is on average 115 centners per hectare, sugar content is 20.7-21.2 g/cm3. Variety Dostojnyj has an even higher yield (average 140 c/ha) with a sugar content of 19.8-20.5 g/cm3. In addition, the fruiting coefficient of Krasnostop AZOS is annually consistently higher than the control variety and is 1.3-1.4. The studied varieties are promising for growing them on an industrial scale and obtaining high-quality final products from them - dry and dessert wines. Moreover, they have phylloxera tolerance (unlike the control sample), since they have the Phylloxera-resistant Dzhemete variety in their parents, which is a donor of phylloxera resistance genes and passes these genes on to offspring.