BIOPOTENTIAL OF GRAPE GENOTYPES IN VITRO CULTURE
The production of healthy planting material at the present stage of viticulture development is inextricably linked with the use of biotechnological methods. Micropropagation is one of them. In the course of scientific research, the effect of biologically active substances (6-benzylaminopuric and gibberellic acids) in nutrient media on the yield of grape planting material in vitro culture was studied to accelerate the selection process. It was found that the modified medium according to the patent of A.N. Rebrov had the greatest potential at the first stage of cultivation of grape explants. The survival rate of grape regenerant plants was up to 80%, depending on the variety. At the 2nd and 3rd passages, the nutrient medium according to the patent of A.N. Rebrov was modified by adding 6-benzylaminopurine at a concentration of 0,35 mg / L and gibberellic acid at a concentration of 0,1 mg / l. This contributed to the production of a larger number of normally developed regenerant plants during hemogenesis; no negative phenomena were found.