Using physiologically active substances in the grapevine seedlings production

The purpose of research is to study the possibility of using physiologically active substances contained in the Kornevin and Silk preparations in the production technology of planting material to increase the efficiency of the production of standard grape seedlings. The studies were carried out at VNIIViV, a branch of the Federal State Budgetary Scientific Institution FRARC (Novocherkassk, the Rostov Region). The results are presented that determine the influence of the preparations of the trade marks Kornevin and Silk on the survival rate of grafts and shortened cuttings, biometric indicators of grafted grape seedlings of the Platovsky variety and rooted seedlings of the Platovsky and Berlandieri × Riparia Kober 5BB varieties. The positive effect of the preparations used on overcoming stress during the adaptation period of grafts after planting, which was reflected in the quality and yield of seedlings, was established. As a result of the use of the Kornevin stimulator, the maximum yield of grafted cuttings with circular callus after stratification was 95.2 %. Kornevin's solution of 0.1 % concentration had a positive effect on the growth of shoots (78.9 cm), the development of the leaf surface (1318.6 cm2) and the root system (14.7 pcs.) of grafted seedlings of the Platovsky / Kober 5BB variety in the school. Preplanting treatment with 0.3 % Silk solution of shortened cuttings of the Platovsky variety contributed to an increase in survival rate by 16.1 %. The area of the leaf surface, depending on the concentration of the solution, exceeded the indicator of the control variant by 76.3-210.5 cm2, the number of calcaneal roots was higher than the control one by 1.9-3.6 pcs. The most active root formation in the variety Kober 5BB was observed when using Kornevin in the form of a powder; an increase in the roots of all fractions was noted. It has been established that when physiologically active substances are used in the technological cycle of production of planting material, the biometric parameters of grafted seedlings of the Platovsky / B × R Kober 5BB variety are higher than those of self-rooted seedlings of the Platovsky variety.