Quantitative traits inheritance in hybrid potato populations

The aim of research is to study the inheritance of quantitative traits in hybrid potato populations. Research objectives: to study the nature of the inheritance of quantitative traits in the original forms during reproduction from botanical seeds; to carry out hybridization, to study the offspring from the crossing of the original forms according to the size of tubers, the ratio of commercial and non-commercial tubers, the shape of tubers, the depth of the eyes, digestibility, color of the peel and pulp, taste, starch content. The study of the nature of inheritance, heritability and variability of quantitative traits in 88 samples from the hybrid population of the self-pollinated potato variety Aramis in the forest-steppe zone of the Krasnoyarsk Region was carried out. The study presents the results of the analysis of the inheritance of the main economically valuable traits by second-generation potato hybrids using indicators of the degree of phenotypic dominance and heterosis. Evaluation of 88 samples was given according to 8 quantitative traits that make up productivity. As a result of the studies, the character of inheritance of the main traits that make up productivity in intraspecific F2 potato hybrids was established. By the nature of inheritance in F2 in potatoes, the dependence of the indicator on the trait and combination is traced. A hybrid combination F2 was identified, in which overdominance was manifested by most of the features. It has been established that in all hybrids a high value of the coefficient of heritability is noted on the basis of the number of tubers and their weight from one clone. When assessing the inheritance of quantitative traits in the offspring of the second generation of potato samples obtained from self-pollination of the Aramis variety, a new offspring with various phenotypic changes was identified. More than 70 % of the samples surpassed the parental form of the Aramis variety in productivity by 150-200 %. Samples of potatoes with the productivity of marketable tubers from one bush of more than 2000 were obtained. Progeny with disease resistance were isolated.