Morphological parameters in breeding for higher seed yield in Indian mustard [Brassica juncea (L.) Czern. & Coss.]
Highest genotypic coefficient of variation was recorded for number of secondary branches per plant. High genetic variation was found in length of siliqua, seed yield per plant, number of siliqua per plant and 1000 seed weight (g). Where number of secondary branches per plant, number of siliqua per plant, length of siliqua, 1000 seed weight (g), oil content and seed yield per plant possessing high G.C.V. and heritability. High estimates of genetic advance were observed for number of siliqua per plant. High heritability coupled with high genetic advance; it was inferred that additive gene action was in operation for control of length of siliqua, seed yield per plant, 1000 seed weight, number of secondary branches per plant and number of siliqua per plant. The genotypic correlation coefficients were higher than phenotypic and environmental correlation coefficients. This indicated that there is strong inherent association between the various characters studied. Number of siliqua per plant and number of seeds per siliqua were the major characters which had highest direct contribution towards yield per plant.
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