Vyshnevska O. Genetic sources of traits of high efficiency of birdsfoot deer trefoil and their use in variety breeding for moderately humidified soil of the Polissia

Subject of inquiry - strain samples of birdfoot deer trefoil of various ecological and geographical origin. The purpose of investigation - the use of world gene pool and local forms of birdsfoot deer trefoil in the conditions of moderate humidification and the isolation of initial selective material for the development of new varieties with the high indices of productivity at mowing and grazing combinated use, the establisment of genetic nature and character of heredity of some economic traits. The research methods - field, visual, quantitative, weight, biochemical, spectrophotometric, dispersion, regressive. The correlation connections that allow to ground the ways of the development of varieties with high indices of fodder and seed productivity are determined; the genetic nature of important agronomic characters what indicates to the possibilities and trends of the conduct of birdsfoot deer trefoil breeding is fixed. The genetic sources of birdsfoot deer trefoil with the higher productivity are selected; the two new varieties Ant and Dynamo of mowing and grazing combinated use type for growing in the Polissia and Forest-Steppe zones are developed. The research results are introduced in the selection programs of the Institute of Agriculture of the Polissia of the UAAS, Institute of Fudders of the UAAS and Stock-Bbreeding of the Western region of the UAAS. The developed varieties secured in the state strain test the dry matter yield increasing by 6-11% and seed productivity by 130 %. The sphere of application - the selection practice.