Genetic variability and association study for different traits in F5 progenies of groundnut

Abstract

The present experiment was conducted during summer 2018, to study variability and diversity among F5 progenies of eight crosses of groundnut. The experiment was laid in compact family block design with two replication at All India Co-ordinated Research Project on Groundnut, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar (M.S.). Analysis of variance revealed highly significant differences among the progenies of eight crosses for the characters studied, indicating appreciable amount of variability among the progenies for the characters studied. The estimation for phenotypic coefficient of variation (PCV) was higher than the genotypic coefficient of variation (GCV) for all the characters. The number of branches per plant recorded the highest estimate of GCV and PCV followed by number of immature pods per plant, number of mature pods per plant, dry pod yield per plant. The moderate estimates of GCV and PCV were observed for haulm yield per plant and hundred kernel weight. In correlation study, it was observe that dry pod yield per plot recorded significant positive correlation with days to maturity, number of branches per plant, number of mature pods per plant, hundred kernel weight, shelling %, sound mature kernel and protein content at both genotypic and phenotypic levels while characters immature pods per plant and oil content, were negatively associated with dry pod yield per plot.