СОКРАЩЕНИЕ ПЕРИОДА СТРАТИФИКАЦИИ ПРИВИТОГО ПОСАДОЧНОГО МАТЕРИАЛА ВИНОГРАДА ТЕХНИЧЕСКИХ СОРТОВ

Abstract

Due to the fact that the classical technology of growing grafted grape seedlings does not provide producers and researchers with the necessary quantity and quality of planting material, in the conditions of the Rostov region in 2020-2022, the effectiveness of pre-inoculation treatment of grafting components with modern drugs of various nature was studied. The studied drugs were Humat+7, Cultimar, NanoKremniy and Radiopharm. According to the research results, for the period 2020-2022, it was found that the pre-inoculation treatment of grape grafting components with these drugs is effective. Stimulation of growth processes provides better callus formation during the stratification period, where on the 15th day after inoculation, the formation of a complete circular callus was noted in 72.2-93.9 % of grafts, which is 18.3-40.0 % more than in the control variant. When analyzing the quality of plants after inoculation, an increase in the number of first-class grafts was recorded from 56.7 % in the control to 64.4-95.0 % in the treated variants. There was also a decrease in the number of second-rate grafts from the lowest possible to 3.9 %. In addition, complete absence of rejections was noted in 6 out of 12 experimental variants with the use of drugs, and in the other 6 variants, where the rejections varied from 3.9 to 16.1 %, the rejecting value was 1.4-5.7 times less than in the control. The highest value of the final yield of seedlings was noted when the rootstock of the grafted seedlings was treated with a solution of the drug Humat +7 and amounted to 53.3 %. In general, all variants that were treated with drugs showed better results than the control variant treated only with water. Key words: GRAPES, CUTTING, VARIETY, SCION, ROOTSTOCK, STIMULANTS, REGULATORS, PAS, GRAFTING