Vegetative development of young plantings seedless grape varieties in the arid zone

The aim of the research was to study and isolate promising seedless grape varieties with a complex economically valuable traits adapted arid conditions Northwestern Caspian Sea. objectives included: studying features annual biological cycle grapes, determining leaf area studied varieties, assessing growth strength degree ripening shoots, dynamics shoots. studies were conducted in 2020...2021 vineyard Precaspian agrarian federal scientific center Russian academy sciences. object collection introduced from Novocherkassk, Rostov region, consisting 16 varieties. Radiant variety, zoned Lower Volga adopted as standard. maximum duration growing season, which is 144 days, recorded Himrod minimum (138 days) - Zolotce, Iskander largest surface an index 53.2 68.4 cm2 formed Veles, Iskander, Lucia, Century, Jupiter. With NSR05 = 2.6 cm2, listed significantly exceeded control indicator by 4.1...19.3 cm2. diameter shoots varied 6.2 mm Ballet, Zolotce Neptune 6.8 Veles variety. length shoot value for Century variety (74.7 cm), (138.5 cm) maturation vine indicators 76.8 79.4 % Aphrodite, Centenary satisfactory, rest – good.