Winter hardiness of sweet cherry cultivars in the conditions of Krasnodar region

Abstract

The study results of 21 sweet cherry cultivars of the North Caucasian Zonal Research and Development Institute of Horticulture and Viticulture breeding as well as introduced by basic components of winter hardiness in Krasnodar region for 1993-2012 are given in the article. The investigation results let to establish action possibility in the southern region of 4 components of winter hardiness which are shown in each cultivar independently. The combination of several components in one genotype is rare. But it is the most valuable one since it allows a cultivar to resist with a bigger guarantee to negative temperature factors. Sweet cherry cultivars determined by several resistance components are the most valuable for industrial use. Among them are ‘Drogana zhyoltaya’ (4 components of resistance), ‘Alaya’, ‘Krasnodarskaya rannyaya’ (3 components), ‘Dajbera chyornaya’, ‘Melitopolskaya chyornaya’, ‘Caucasian improved’, ‘Caucasian’, ‘Krasa Kubani’, ‘Volshebnitsa’, ‘Dar izobiliya’, ‘Sashen’ka’, ‘Yuzhnaya’ (2 components of resistance).