Lisova Y. Selection and genetic features of naked and film genotypes of oat in breeding for increase productivity and genetic potential

The dissertation theoretically outlines the selection-genetic and adaptive features of naked and film genotypes of oat, variability, correlations, homeostaticity, selection value, plasticity, stability of quantitative characteristics of productivity and quality, selection indices in assessing genotypes, phenotypic stability and adaptive potential of constant selection forms, heredity, heterosis and transgression of quantitative traits in hybrid populations. The purpose of research is a theoretical substantiation of selection and genetic features of naked and filmy genotypes of oats in selection to increase productivity and adapted potential. Valuable samples were found by quantitative traits, varieties with high and medium plasticity and its stable manifestation were established. The parameters of adaptability were determined according to the characteristics of productivity and protein content of grain and their variability depending on the growing conditions of selection forms. In a series of crosses in ten combinations, the results of studying the inheritance of such quantitative traits are highlighted: plant height, panicle length, productive tillering, number of grains per panicle, weight of grain per panicle and per plant. The inheritance of traits in hybrid F1 populations occurred according to different types: overdominance (heterosis), intermediate inheritance, partial positive dominance, partial negative dominance. The characteristics of film oat varieties and the economic assessment of their cultivation are given, new registered varieties are described.