ASSESSING AND USING OF GENETIC SOURCES OF VALUABLE TRALTS LN SPRING BARLEY BREEDING
The results of long-term researches on the spring barley gene pool at the V.N. Remeslo My-ronivka Institute of Wheat of NAAS of Ukraine are presented in the paper. The spring barley collection including 1408 accessions from 52 countries worldwide has been formed. New sources of improved yield and adaptive potential, resistance to abiotic and biotic factors have been identified It is shown that both simple and composite crossings of the collection accessions and the varieties developed on their basis, as well as the combination of hybridization and chemical mutagenesis have been effective when developing spring barley varieties.