Assessment of the level of drought resistance of the group of seedless varieties of the collection of NSC «Tairov institute of viticulture and winemaking» on indicators of water-containing capacity of leaf tissues

Replenishment of the assortment seedless varieties Ukrainian selection is one tasks breeders NSC «IViV them. V.Ye. Tairov ». Climate change has exacerbated and increased duration droughts in spring summer. That why it necessary to use crosses parent component with a known level drought resistance. According results research, resistance group ampelographic collection im.V.Ye. «of different genetic geographical origin was determined . Both intraspecific hybrids Vitis vinifera interspecific hybrids, which their estimated formula contain 3-4 species Vitis, were studied. The study based on determining manifestation physiological mechanism protection against temperature stress - water-holding capacity leaf tissues. Studying content fractions water (easily retained bound) changes ratio during growing season made possible identify stress-tolerant varieties. conducted years high exposure stress, increases objectivity data. obtained confirmed sensitivity lack moisture supply derived from created participation non-drought-resistant amurensis. research aimed at identifying donor sign «drought resistance», namely holding capacity. Due impact grape plant, samples taken critical phases phase intensive growth shoots, formation berries completion season. A rather been determined, explained by Central Asian However, main feature breeding interest that they can pass offspring seedlessness product quality. In comparison control values, Attika Flame stood out. These are recommended for further process as sources donors set signs interest, including ability withstand thermal moisture.