Сurrent directions in improving the sweet cherry sortiment for the south of Russia

Abstract

The article presents the results of the breeding work to obtain varieties of the new generation of open pollination. These include varieties of Krasna Devitsa, Madonna, Podarok Leta, Chernie Glaza, Yasno Solnishko, transferred to the State variety test. Sweet cherry (a diploid, 2n = 16) refers to various species of the genus (Cerasus Mill.) and valuable stone fruit crops. Current trends in work with southern sweet cherry varieties today are breeding for ecological plasticity, immunity to disease, low growing, yield, large fruit size and fruit quality. The purpose of the study is to assess the biological potential of new varieties for use in modern intensive plantings and improvement of the regionalized assortment of Krasnodar region. Sweet cherry varieties derived from open pollination of the best varieties that is actually by intervarietal hybridization within the species Cerasus avium. Primary selection was carried out on the basis of the North Caucasus Federal Scientific Center for Horticulture, Viticulture, Winemaking, which collection of cherries is presented by the best foreign and domestic varieties. It has been established that the sweet cherry varieties obtained from open pollination along with varieties derived from directed crosses, combine in their genotype a set of valuable characteristics and are superior in some traits of the original parent forms. The variety Madonna is characterized by a super-early period of ripening, and adaptability to stress factors; the Krasna Devitsa is a variety with a restrained force growth and large fruits (10.0-11.0 g); the varieties Yasno Solnishko and Chernie Glaza are highly resistant to coccomycosis and shot-hole disease. The selected sources of breeding significant traits, when included in directional crosses, will speed up the breeding process and increase the efficiency of breeding work.