Intrapopulation variability of fruit quantitative traits Diospyros lotus L. in the Inner Mountain Dagestan

Abstract

The cenopopulation of Gimry village in Untsukulsky district of Inner Mountain Dagestan was employed for the first time to analyze intrapopulation variability of Diospyros lotus quantitative traits of fruit. In view of this study were selected 10 random trees in a mature generative stage. It has been made measurements with 30 fruits by 14 morphological and 6 index traits. The multidimensional scaling and cluster analysis have revealed two clusters on the large-fruited (large-fruited and small-fruited) significantly differed in the t-test. The interindividual variability was higher than intraindividual to most studied traits, which may be associated with high genotypic heterogeneity of this population. The analysis of variability by the coefficient of variation (CV, %) and dispersion components (h2,%) has shown the most stable and variable traits. The greatest constancy has found for traits of seed thickness and the calyx index, the smallest – for weighted traits in all degree of variation. The traits of small-fruited trees were strongly correlated and for large-fruited trees – weakly. It has been identified main regularities for the indices variability. The fruit mass, flesh mass and seed mass has same character of correlations with other traits on intraindividual and interindividual levels.