Analysis of the development of grafted grape seedlings on a nursery garden of different graft-rootstock combinations

Abstract

In 2019-2020, experiments were laid on the fields of the ARRIV&W – Branch of FRARC with the aim of experimentally determining the phenotypic signs of compatibility of scion-rootstock combinations with the participation of grape varieties of interspecific origin Denisovskiy and Prestige and rootstock varieties Kober 5 BB and Riparia Rupestris 101-14 introduced to the State Register of Breeding Achievements of the Russian Federation, approved for use. According to the results of the studies, it can be concluded that the selection of the optimal scion-rootstock for growing the necessary scion varieties has a direct effect on the yield of seedlings, which, with the same level of agricultural technology, will minimize production costs for inoculating seedlings and repairing grape plantations. The influence of the rootstock variety on the phenotypic characteristics of the scion variety has been established. The yield of seedlings is the most objective indicator of the compatibility of the scion-rootstock combination. According to the research results 2019-2020. it was found that the yield of first-class seedlings of the Denisovsky and Prestige varieties significantly depends on the used rootstock variety. The Riparia Rupestris 101-14 rootstock has the highest yield of seedlings of the Denisovskiy variety, 45.4%, which is 21.6% more than on the Kober 5 BB rootstock variety. On the Denisovskiy variety, the seedling yield was 48.0%, which is 39.9% more than on the Kober 5 BB rootstock variety.