Diordiieva I. Creation and evaluation of fourspecies forms of triticale

The dissertation is devoted to solution of scientific task of improving the efficiency of breeding winter triticale for number of agronomic traits using spelt wheat (Triticum spelta L). Created fourspecies forms of triticale, which combine genes of parental forms three genomes (soft wheat, hard, spelt, rye), set their morfobiological features and created a breeding-valuable materials, proposed scheme of creation of fourspecies forms of triticale which you can expect the quantitative and qualitative indicators of productivity improvement that is the actual task of culture breeding. Created fourspecies forms of triticale with wheat-rye chromosome substitutions, developed a common technology of creation, selection and improvement of wheat-rye chromosomally substituted forms of triticale. Suggested ways of creation, selection and improvement of wheat-rye chromosomally substituted forms using marker traits that is providing simplify of the selection process. Varieties of fourspeciies triticale Taktic and Strateg transferred to the State sort testing, and selected samples with the same yield that standart, their after reproduction will be transferred to the State sort testing. Created collection of fourspecies forms of triticale (over 500 samples), which examined the indexes of economic valuability and suitability for triticale breeding improvement. Selected forms of fourspecies triticale, which are the source of important traits and valuable initial material for further breeding of triticale of different uses.