MAITRI PANIGRAHI*, L. PRASANTHI, K. HARIPRASAD REDDY AND A. R. NIRMAL KUMAR
Dept. of Genetics and Plant Breeding, S.V. Agricultural college, ANGRAU, Tirupati, Chittoor Dt.517502, Andhra Pradesh, India
An experiment was carried out to estimate the genetic parameters such as variability, heritability and genetic advance, character association and path analysis for eleven quantitative characters viz., days to 50 per cent flowering, days to maturity, plant height, number of primary branches per plant, number of clusters per plant, number of pods per plant, hundred seed weight, harvest index, SPAD chlorophyll meter reading, protein content and seed yield per plant in 42 genotypes of blackgram [Vigna mungo (L.) Hepper]. The genotypic coefficient of variation for all characters studies were less than the phenotypic coefficient of variation indicating the interaction of genotype with the environment. High heritability coupled with high genetic advance as per cent of mean was observed for days to maturity, number of plant height, number of clusters per plant, number of pods per plant and seed yield per plant. Association studies revealed that, days to 50 per cent flowering, days to maturity, plant height, number of primary branches per plant, number of clusters per plant, number of pods per plant and hundred seed weight showed positive and significant correlation with seed yield per plant both at the genotypic and phenotypic level. Path analysis studies revealed that clusters per plant, pods per plant and 100-seed weight had positive and high direct effects on seed yield per plant.
Genetic variability, heritability, genetic advance, character association, path analysis.