Genetic variability, character association and path analysis in indian mustard (brassica juncea l.).

Abstract

Thirteen genotypes of Indian Mustard (Brassica juncea L.) were evaluated for yield and different yield contribution characters at the Regional Agricultural Research Station of BARI. Hathazari, Chittagong. Considerable genotypic and phenotypic coefficients of variation were observed in case of 1000 seed weight, seed yield per plant, primary branches per plant and siliqua per plant. Heritability values in broad sense were high in 1000 seed weight and moderately high for all the characters except branches per plant. Thousand seed weight and siliqua per plant had high values for genetic advance as percentage of mean. Correlation study revealed that seed yield per plant showed high positive and significant correlations with plant height, primary branches per plant and 1000 seed weight but high negative and significant correlations with seeds per siliqua both at genotypic and phenotypic level. Seeds per siliqua, 1000 seed weight and primary branches per plant had high positive direct effects on seed yield per plant. Days to maturity and plant height had considerable negative direct effects on seed yield per plant. The study indicated that selection on the basis of 1000 seed weight and primary branches would be effective to improve the seed yield of Indian mustard