Variability, heritability and genetic advance in late-sown Indian mustard (Brassica juncea L. Czen and Coss)

Variability, heritability and genetic advance in late-sown Indian mustard (Brassica juncea L. Czen and Coss)

2002

A:PS

The experiment was carried out using 98 diverse genotypes of Indian mustard (Brassicajuncea L. Czern and Coss) during Rabi 2001-2002 at Crop Research Centre, GBPUAT, Pantnagar. The crop was sown on 27th April 2001. The study of genetic variability was carried out for 13 agro-morphological characters. The number of secondary branches/ plant recorded the highest values for PCV and GCV followed by number of primary branches/plant, siliqua on main shoot and seed yield/plant. Moderate values for PCV and GCV were shown by plant height, main shoot length, and 1000-seed weight. Days to maturity exhibited the lowest value for PCV while oil content showed the least value for GCV. Plant height, number of primary branches/plant and seed yield/plant revealed high heritability. Plant height also showed high genetic advance while high heritability coupled with low genetic advance was recorded for number of primary branches/plant. Oil content showed low values of heritability and genetic advance. The present study revealed the presence of substantial amount of variability in the material and the important yield components were number of primary and secondary branches/plant, plant height, main shoot length and WOO-seed weight. Therefore, greater emphasis should be given on these characters while selecting for higher yield and related characters.

v.15(3):286-287, INDIAN JOURNAL OF PLANT GENETIC RESOURCES

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