The effect of salicylic acid on qualitative and quantitative characteristics of grafted grapevine seedlings

While the production of grafted grapevine seedlings we studied the effect of treatment of copulation sections on rootstock vine cuttings with salicylic acid solution (SC) (10-2, 10-4, 10-6, 10-8) on tissue regeneration, root formation, growth and development of shoots, leaf surface formation during the period of grafting stratification and on adaptation of seedlings in the field. In the experiment, we used grafted grapevine variety Cabernet Sauvignon, the rootstock - Berlandieri of Riparia Kober 5BB. The experiment was carried out according to a completely randomized scheme with triple repetitions (each repetition has 100 plants) in laboratory and field conditions. The results showed a reduction in the period of grafts’ stratification in some variants, due to the activation of the process of callus tissue formation. At the same time, the use of salicylic acid stimulated the budding of the scion, the growth of shoots and the development of root system. Increased concentration of SC (10-2) inhibits the growth of shoots. The positive effect of SC on adaptive parameters was established