Assessment of genetic diversity in Indian mustard [Brassica juncea (L.) Czern & Coss.] genotypes for yield and its component traits
Authors
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Sharad Kumar Singh Redu
Department of Genetics and Plant Breeding, Kisan P.G. College Simbhaoli, Hapur (U.P.), India
Author
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Tejbir Singh
Department of Genetics and Plant Breeding, Kisan P.G. College Simbhaoli, Hapur (U.P.), India
Author
Keywords:
Genetics diversity, D2 statistics, Indian mustard, cluster analysisAbstract
Genetic diversity analysis in 40 genotypes of Indian mustard [Brassica juncea (L.) Czern & Coss.] using Mahalanobis
D2 statistics for 13 characters enabled grouping these 40 genotypes into 6 clusters. Cluster V was the largest comprised
11 genotypes followed by cluster IV consisting of 10 genotypes, cluster III with 7 genotypes whereas cluster I, II & VI
with 4 genotypes each. It was observed that number of secondary branches/ plant, length of siliqua, number of primary
branches, plant height, number of siliqua per plant and seeds per siliqua were the major contributors towards genetic
divergence. The cluster IV had maximum intra cluster distance (2.815) while maximum inter cluster distance observed
between cluster IV and I (6.346), suggesting that the genotypes constituted in these clusters may be used as parents for
future hybridization programme in mustard.
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