IMPEDANCE INDICATORS FOR ASSESSING THE COMPATIBILITY OF ROOTSTOCK-GRAFT COMBINATIONS OF INDIGENOUS CRIMEAN GRAPEVINE VARIETIES

Abstract

Indicators of the level of electrical conductivity resistance of tissues (impedance) of grafted grape seedlings of indigenous varieties of the Crimea were studied. The experiments involved 15 variety-rootstock combinations consisting of five graft varieties (Dzhevat kara, Sary Pandas, Ekim Kara, Kefesiya, Kokur white) and three rootstock varieties (Berlandieri × Riparia Kober 5 BB, Berlandieri × Riparia CO4, Riparia × Rupestris 101-14). In order to reliably evaluate and interpret the data obtained, the impedance indicators of the studied rootstock-graft com-binations were compared with the data on the yield of standard grafted seedlings from a ground school. A multifactorial analysis of var-iance was carried out, according to the results of which an assessment of the influence of fac-tors of rootstock, graft, conditions of the year of research, as well as their interaction on the impedance indicators of grafted grape seedlings of Crimean native varieties was given.