FORMATION OF COMPLEX-HYBRID POPULATIONS ON THE BASIS OF INTRODUCED LEGUME GRASSES
The paper presents the results of studies on the formation of complex-hybrid populations, the estimation of collection samples of clover, alfalfa, sainfoin according to the complex of economically valuable features to create varieties of hay and pasture type. The base for the study was promising plants and their biomechanical mixture that was sown in wide rows and individually in a row. By negative selection were mown weak and undeveloped plants. During budding - the beginning of flowering we considered economically valuable features, cutting off the plants at a height of 10-12 cm. We noted the direct dependence of alfalfa seed on weather conditions. In the first year alfalfa plants developed irregularly, reaching the maximum height of 58 cm and minimal - 26 cm. From the studied hybrids of sainfoin the most foliage were № 11-20 and № 21-30. Plants of two selected groups of hybrids exceeded the standard for foliage 2,2 and 3,7%, respectively. Estimation of the productivity of the studied legume grasses (clover, alfalfa, sainfoin) that was determined by calculation method based on the weight of seeds per a plant, showed that the maximum level of seeds productivity formed samples that exceeded the standard variety by 15-20%. The estimation of collection samples of clover, alfalfa, sainfoin on the complex of economically valuable features to create varieties of hay and pasture type. The best samples on the yield of green mass tillering capacity and plant height are identified. The source material on adaptability features, green mass productivity, foliage and seed production is obtained. Promising samples of clover on high seed productivity reaching more than 60% are selected. Based on the pollination of best genotypes complex-hybrid populations for the further selection and evaluation are formed.