Genetic variability and heritability studies for yield and attributes in Indian mustard

Abstract

Indian mustard is an important oilseed crop. In the backdrop of introducing suitable Indian mustard varieties to south India, the present investigation was carried out to evaluate the genotypes for two Rabi seasons. The observations recorded on 16 characters were analyzed using combined ANOVA. The genotypic coefficient of variance was high for secondary branches per plant, racemes per plant, economical yield, biological yield, harvest index, seed yield and oil yield. The traits, plant height, secondary branches per plant, racemes per plant, siliqua length, test weight, economical yield, biological yield, seed yield and oil yield registered high heritability indicating less influence of the environment. Genetic advance as percent mean was high for secondary plants per plant, racemes per plant, economical yield, biological yield, harvest index, seed yield and oil yield indicating possibility of rapid improvement. The genotypes DRMR 4005, TPM-1, TM-136, TM-217 and 6IJ0401were top yielders for seed yield.