Horenskyy V. Improving the methods of сreating a source material for breeding of alfalfa under conditions of high soil acidity. - Manuscript

Object of study - the patterns of expressing the commercially-valuable traits and hybrid collection of samples of the material conditions for alfalfa in in increased soil acidity conditions. The aim of research was to improve ways to create original material by evaluation and selection of genetic traits sources of fodder and seed performance for alfalfa breeding in increased soil acidity conditions. Research methods: field - conducting phenological finding and records, hibryd-analysis; Laboratory - determining the alu-resistance, determining the of quality vegetative mass, reckonsng and seed productivity elements for its formation; mathematical-statistical - objective of experimental data obtained. In the dissertation are present the results of studies on the collection of samples of alfalfa of different eco-geographical origin by the elements of fodder and seed productivity, quality of the feed mass and resistance to root rot. The purpose is in identifying valuable source material that is capable for normal produce in terms of increased acidity of soil. Are defined coefficients of correlation between individual elements of performance. The efficiency of laboratory method for evaluating the resistance to aluminum of alfalfa at the juvenile stage of growth and development, as an accelerated method of the allocation of genotypes that are tolerant to the high soil acidity was improved and confirmed. Complete breeding and genetic characteristics of quantitative traits of feed and seed productivity by combinational ability and heritability were discovered. Dedicated promising breeding numbers with increased feed and seed productivity. Created a sort of lucerne sown Radoslawa, which is based on the results of competitive varietal testing due to high soil acidity, exceeded the standard variety Sinyuha in collection of dry matter to 1.95 t/ha and seeds - 0,036 t/ha. In 2015 transferred to the qualifying expertise in the system of government sort testing. Sector - Breeding research institution.