Genetic parameters and correlations for seed yield and morphological characters in Indian mustard [Brassica juncea (L.) Czern. & Coss.]
GENETIC PARAMETERS AND CORRELATIONS FOR SEED YIELD IN INDIAN MUSTARD
Keywords:Brassica juncea, Correlations, Genetic parameters, Indian mustard
The present investigation was carried out during rabi season of 2007-08 with 60 germplasm accessions of Indian mustard from China, India and Australia and 5 check varieties. The material was grown in an augmented block design to assess heritability, genetic advance for seed yield and other morphological characters and their inter se relationships. Significant mean sum of squares indicated genotypic differences for all the characters investigated except protein content. Estimates of heritability and genetic advance were high for secondary branches/plant, siliqua length, 1000-seed weight, seed yield/plant and harvest index indicating dominant role of additive gene action in their inheritance. Thus, selection would be effective for their improvement in early segregating generations. Seed yield/plant had significant and positive correlations with secondary branches/plant, main shoot length and siliquae on main shoot. The genetic correlations of seed yield with these characters were also positive and of moderate to high strength suggesting that for yield enhancement in Indian mustard greater emphasis in the selection programme should be laid on these component characters.
Chauhan J S, Yadav S K, Kumar P R, Pareek S, Tyagi M K and Meena M L 2000. Evaluation of Indian mustard [Brassica juncea (L.) Czern & Coss] germplasm under rainfed condition. Indian Journal of Plant Genetic Resources, 13: 177-182.
Hanson W D 1963. Heritability. In: Hanson W D and Robinson H F (Ed.) Statistical Genetics and Plant Breeding. National Academy of Sciences, National Research Council, Washington DC, USA, pp.125-139.
Jindal S K and Labana K S 1985. Quantitative inheritance for quality traits in Indian mustard. Indian Journal of Agricultural Sciences, 55: 3-7.
Johnson H W, Robinson H F and Comstock R E 1955. Genotypic and phenotypic correlations in soybean and their implications in selection. Agronomy Journal, 47: 477-483. DOI: https://doi.org/10.2134/agronj1955.00021962004700100008x
Kardam D K and Singh V V 2005. Correlation and path analysis in Indian mustard [Brassica juncea (L.) Czern and Coss]. Journal of Spices and Aromatic Crops, 14: 56-60.
Kumar S, Sangwan R S and Yadav I S 1999. Correlation studies in Brassica species under dryland condition. Cruciferae Newsletter, 21: 151-152.
Lush J L 1949. Heritability of quantitative characters in farm animals. In: Proceeding of 8th International Congress of Genetics, Stockholm, Sweden, pp. 356-375. DOI: https://doi.org/10.1111/j.1601-5223.1949.tb03347.x
Mahla H R, Jambhulkar S J, Yadav D K and Sharma R 2003. Genetic variability, correlation and path analysis in Indian mustard [B. juncea (L.) Czern and Coss]. Indian Journal of Genetics and Plant Breeding, 63: 171-172.
Misra A K, Kumar A, Kumar P R and Manohar S S 2007. Evaluation and characterization of elite germplasm of Indian mustard, Brassica juncea (L.) Czern and Coss. Journal of Oilseeds Research, 24: 27-30.
Misra A K, Shiva Ratan and Arvind Kumar 2004. Germplasm evaluation of Indian mustard [Brassica juncea (L.) Czern and Coss]. Journal of Oilseeds Research, 21: 248-251.
Pant S C and Singh P 2001. Genetic variability in Indian mustard. Agriculture Science Digest, 21: 28-30.
Reddy A and Reddy P 1990. Genetic variability and character association in Indian mustard in non-traditional area-Andhra Pradesh. In: Proceeding of National Seminar on Genetics of Brassicas, Jaipur, Rajasthan. pp.27.
Sikarwar R S, Dixit S S and Hirve C D 2000. Genetic association path analysis, heritability and genetic advance studies in mustard [Brassica juncea L. Czern & Coss.]. Journal of Oilseeds Research, 17: 11-16.
Singh K H, Chauhan J S, Srivastava K K and Kumar P R 2003. Variability and character association in segregating generation of mustard. Journal of Oilseeds Research, 20: 118-119.
Singh K H, Srivastava K K, Chauhan J S and Arvind Kumar 2006. Genetic divergence and stability analysis in Indian mustard, Brassica juncea (L.) Czern & Coss. Journal of Oilseeds Research, 23: 151-155.