THE INFLUENCE OF GEOGRAPHICAL VEGETATION ZONES ON RHIZOGENESIS PROCESSES IN AMPELOPSIS MEGALOPHYLLA DIELS ET GILG SHOOTS

The paper presents research results on single-bud cuttings’ regenerative ability, depending on structural features of nodes in liana Ampelopsis megalophylla Diels et Gilg. The research was conducted in the laboratory of Kuban State University named after I.T. Trubilin. The influence of structural features in nodes of Ampelopsis megalophylla Diels et Gilg on shoot-forming and root-forming ability has been studied, and the relationship between morphological features and rhizogenesis processes has been established. Observations of rhizogenesis processes were carried out according to the methodology described in 1996 by L.M. Maltabar, P.P. Radchevsky, N.D. Magomedov and then improved by P.P. Radchevsky. The obtained data were processed by variance analysis. It has been found that the most active budding and the highest number of cuttings with blooming buds were in the group of cuttings with 1 wintering bud and a sympodial branching at the node; the highest number of shoots per stalk, as well as the average length of shoots were in the group with 2 wintering buds and a sympodial branching; the largest number of rooted cuttings in the variant with the 1st wintering bud and a sympodial branching at the node once again confirms the studies of some physiologists, which indicate that hormonal activity has a positive effect on the rooting processes. The maximum value of the root index per stalk has been established in the group with 2 wintering buds and a sympodial branching, where the greatest photosynthetic activity has been recorded (the largest number of shoots and the length of the shoot per stalk); however, the greatest importance of rooted cuttings with 3 or more roots has been recorded in the group with the highest hormonal activity