Biochemical characteristics of roots and quality of own-rooted planting material of grape varieties tolerant to phylloxera when using biologically active substances and hormones

Dagestan selection experimental station for viticulture and vegetable growing - a branch of the Federal State Budgetary Scientific Institution “North Caucasian Federal Scientific Center for Horticulture, Viticulture, Winemaking”, 9 str. Vavilova, Derbent, 368601, Russia

^* Corresponding author: kre_05@mail.ru

Abstract

The aim of the research is to conduct a comparative assessment of the biochemical status of roots and the influence of physiologically active compounds on the formation of the root system of phylloxera-tolerant grape varieties. It was established, that the hormonal status and the content of BAS in the root system of phylloxera-tolerant varieties of interspecific origin are different. It is assumed that the different survival rate of cuttings of V. vinifera L. varieties and varieties of interspecific origin are due to different hormonal status, in particular, the level of endogenous auxins and the degree of gene expression, including exogenous use of auxin drugs. On varieties of interspecific origin, with the non-root use of a solution of FAS based on cytokinin, auxin and trophic factor, in a ratio of 10:1:25, the formation of a powerful root system, an increase in the number of heel roots and the number of roots with a large diameter, an increase in the trophic potential of the elements of the root system compared with the pre-planting use of auxin preparation (NUC) is observed. this will contribute to the better development and early fruiting of root-related plants in the following years.