Ostapets T. Inheritance of character of leaf lamina color in fescue species and creation of source material for multiple yield components

The object of research is the formation of morphological traits in hybrids obtained from crossing collection samples of red bonfire (Festuca rubra L.), blue (Festuca glauca L.) and sheep (Festuca ovina L.) with gray leaves and varieties of the respective species. The purpose of research is to establish the features of inheritance of leaf color trait in bonfire species and to create a new source material for a set of characteristics of productivity, resistance to adverse environmental factors in combination with decorative. Research methods - general scientific. The practical significance is to create a new source material based on crosses of collection samples of red, sheep and gray bonfire with varieties of appropriate species and obtaining breeding sources, which are characterized by stable manifestation of the bluish color of the leaf blade in combination with improved performance and are a valuable source material for selection lawn grasses. The scientific novelty lies in the fact that collection samples of cereal grasses of different origins have been identified and sources of valuable economic features and properties in combination with high decorativeness have been created; the peculiarities of inheritance of the trait of bluish leaf blade in bonfire species were revealed and cytoplasmic control of this trait was established; it was found that the genes of bluish leaf color are located in the cytoplasm and are transmitted through the maternal line, and other marker traits are controlled by the nuclear apparatus and are manifested in the presence of a dominant allele. Selection samples created during the dissertation are used in the research selection process of perennial cereals in the NSC "Institute of Agriculture NAAS" and the Institute of Feed and Agriculture of Podillya NAAS. Varieties of sheep fescue Blyskavka and red fescue Demetra were transferred to the State Qualification Examination in the Ukrainian Institute of Plant Variety Examination.