THE ROLE OF THE GENOTYPIC FACTOR IN THE VARIABILITY OF WEIGHT TRAITS OF VICIA FABA L. VARIETIES DURING INTRODUCTION IN THE CONDITIONS OF INNER MOUNTAIN DAGESTAN

For the first time in the conditions of Inner Mountain Dagestan, an introductory analysis of five varietal samples of fodder beans was carried out - Vicia faba L., the seeds of which were obtained from the All-Russian Institute of Plant Growing (VIR) named after N.I. Vavilov (St. Petersburg). The work is done at the population level. As a result of research, the role of varietal diversity in the structure of variability of seven weight traits in five varietal samples of this culture has been clarified. Among the weight features of the combined sample (∑n = 59) and each varietal sample of this culture, the most stable and plastic indicators of the vegetative and generative sphere are noted. With the minimum values of relative variability and empirical indicators (asymmetry and excess), index signs are allocated - reproductive effort and its effectiveness, which show the proportion allocated to reproduction, and belong to the main indicators of the adaptive (reproductive) strategy. For the remaining five weight features, both relatively high values of the coefficient of variation with relatively similar swing indices (max–min) and partial (max/min) extreme variants were established, as well as significant deviations of empirical indicators from the normal distribution according to Student's t-criterion at the highest level. Sample No. 2399 "KIU-82" was identified, which differs in the minimum (46.7%) fractions of dry fruit mass in the generative shoot and the maximum (35.4%) part of the dry weight of the flaps in such a bean. Between the dry mass of the generative shoot and those of its components, as well as between the signs of the dry mass of the components themselves, significant values of the correlation are noted. The average values of the considered weight characteristics of the varieties of this crop under the new conditions do not differ according to the Student's t-criterion, and the differences are random. The influence of varietal diversity on the variability of the weight characteristics under consideration is also random.