GENETIC VARIABILITY OF YIELD AND QUALITY CHARACTERS OF MUNGBEAN (Vigna radiata L.)

Abstract

An experiment was conducted to study the genetic variability analysis based on different yield contributing and quality traits of Mungbean genotypes in Sher-e-Bangla Agricultural University, Dhaka-1207 and Bangladesh Council of Scientific and Industrial Research, Bangladesh during Rabi season (2019). In case of morphological traits, analysis of variance revealed significant differences among all the genotypes for all the characters. Number of pod per plant showed highest range of variation (53.67-16). That means wide range of variation present for this character .High heritability coupled with high genetic advance in percent of means were observed number of cluster per plant, number of pod per plant, pod length, number of seed per pod, thousand seed weight. The significant positive correlation with grain weight per plant was found in number of cluster per plant, number of pod per cluster, pod length, thousand seed weight at genotypic level and phenotypic level, number of pod per plant at phenotypic level. Path co-efficient analysis showed that number of per pod per plant, pod length, number of seed per pod, thousand seed weight had significant positive direct effects on yield. It had also significant positive correlation with yield. The maximum inter cluster distance was observed between the cluster I and V indicating genotypes from these two clusters if involved in hybridization may produce a wide spectrum of population. In case of eleven qualitative traits, the analysis of variances showed significant mean squares for different characters that indicated the presence of sufficient variation among the genotypes for all the characters. High heritability coupled with high genetic advance in percent of means were found for all traits. The significant positive correlation with protein percentage was found in fiber at genotypic and phenotypic level. Path co-efficient analysis showed that potassium %, and phosphorous % had direct positive effect on protein % and fiber had significant positive correlation with matter protein %. The highest inter genotypic distance was observed between G1 and G7. Considering group distance and other agro-morphological and qualitative performance, genotypes G4 and G6 found to be potential for future hybridization program in the response of increase yield and hybridization between G1 and G15 respond to increase nutrient content.