Hahin A. The variability and inheritance of agronomic traits of common vetch

The object of research is the features of inheritance and variability traits common vetch and methods of selection of initial forms for crossing and selection. The purpose of research - to identify features variability and inheritance of agronomic traits in hybrids, breeding numbers and collection samples common vetch; determine the possibility of selection in early generations of hybrid populations. Research methods are conventional. The thesis presents the results of research agronomic character and traits of forage and grain productivity in the collection samples cultivar and those progeny of common vetch. The subject of research is the variability, inheritance and selection methods of initial forms. Also, defined part each productivity traits based on regression. The variability of productivity traits has evaluated in the initial form and F1-F2 progeny. Ascertained, that grain productivity traits sensitive to abiotic factors in their formation phase. Data are given about inheritance traits of forage productivity in F1-F2 progeny. It is shown that positive dominance and over-dominance in F1 hybrids when the maternal form is adapting to the abiotic conditions. Found that in crosses initial forms with different variability of branches number, derived highest inheritance when the maternal forms was trait with low variability, and a parental - high variability. Also, obtain most diverse genotypes and high inheritance length stems from crossing branched forms or forms with different of the length stem. The inheritance by the number of branches is high by crossing tall and dwarf initial forms. Besides, it is dealt with inheritance traits of grain productivity in F1-F2 progeny. Established, high inheritance of the pods per plant and the grains per pod, when high values these traits in maternal form. If both the initial form with a high value one of a trait (pods per plant or grains per pod), inheritance another trait in F2 progeny is high. It is dealt the results of the selection of plants with F2-F4 progeny in mixed vetch-oat and vetch-mustard conenoses in order to increase the adaptability to manufacture harvesting. Data are given about the results of selection and selected breeding promising numbers. It is shown economic efficiency of growing numbers on the green mass and seeds. The result of this research breeding numbers those are on sort testing. Derived and included in the State Register of grades of plants suitable for dissemination in Ukraine, cultivar of spring vetch Yevhena, Lila, Oziriana.