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Aim. The aim to identify valuable source material from the number of intraspecific, interspecific and intergeneric hybrids of stone fruit plants to improve and expand the varietal composition of peach that meets the needs of industrial and amateur gardening. Methods. Program and methods of varietal study of fruit, berry and nut crops / Ed. G. A. Lobanov. Michurinsk, 1973. 492 p. Program and methods of selection of fruit, berry and nut crops / Ed. G. A. Lobanov. Michurinsk, 1980. 529 p. Program and methods of selection of fruit, berry and nut crops / Ed. Sedova and T. P. Ogoltsova. Orel: VNIISPK, 1999. 608 p. Results. New genotypes of peach, which are sources of cytoplasmic male sterility (CMS), were selected; large-fruited peach I4 970-89 was isolated, as a pollinator for genotypes with male sterility; in the population of hybrid seedlings F2 (peach of the world x David peach) we identified new genotypes of plants with absent characters in their original species; with resistance to powdery mildew and leaf curl, dwarf plant growth, forms with decorative double flowers, white, pink and purple-red color of the petals of the corolla, bell-shaped and rosy flower types, male sterility, pollen fertility and honey taste of the fruit inherited from his wild ancestor - David peach. Summary. Selected maternal genotypes of the original parental forms of apricot, with a character of CMS - 189-88, 249-81, 498-86. They are of breeding value for the development of new peach cultivars. Peach I4 970-89 of the Nikitsky Botanical Gardens’ breeding is a pollinator for hybrids of peach with common almond, characterized by male sterility. Valuable characters of David peach could be transferred to common peach and its cultivars as a result of natural hybridization due to their joint growth in the primary Chinese-Japanese genetic center. From wild ancestor, David peach common peach cultivars inherited such valuable characteristics as resistance to powdery mildew and leaf curl, dwarf growth of plants, shapes with decorative double flowers, white, pink and purple-red petals of the corolla campanulate and rose-like types of flower, male sterility, pollen fertility and the honey taste of the fruit.

Intraspecific, interspecific and intergeneric hybridization of stone fruit plants