VARIABILITY STUDY IN F2 MATERIALS OF INTERVARIETAL CROSS OF BRINJAL (Solanum melongena L.)

Abstract

An experiment was conducted to study genetic variability, character association and path coefficient analysis for yield and its contributing traits in Brinjal genotypes. The experiment was carried out at the Ilorticulture farm of Shre-E Bangla Agriculture University. Shre-E Bangla Nagar Dhaka-1207. The results indicated that diiTeren brinjal genotypes differed significantly regarding all the characters studied. Minimum differences of genotypic and phenotypic variances and coefficient of variation as well as high heritability coupled with high genetic advance and genetic advanced in percent of mean were observed for all the traits of different brinjat genotypes indicated additive gene effects of these traits. Number of fruit per plant and single fruit weight of different brinjal genotypes had a high degree of significant positive association with yield per plant and high positive direct effect indicated that these characters had the major contribution towards the yield per plant. Selection could be made based on these two traits for the improvement of yield of briqjal genotypes. Regarding singal fruit weight and yield per plant. the genotype Line-Ol x Line-25F2 perthrmed best. Genotypes Line-Ol x Line-25F1, I,ine-23x Line-24F2 produced higher yields next to genotype l,ine-Olx Line-251'- 2. In respect of days to flowering and days to first harvest Line_23x Linc-24F'2 was Ibund as the earliest genotype.