Diversity analysis in micro-mutant lines of greengram [Vigna radiata (L.) Wilczek] for yield and cold tolerance
1. Department of Plant Breeding & Genetics
2. Department of Soil Science & Agricultural Chemistry, OUAT, Bhubaneswar, India
Molecular Plant Breeding, 2015, Vol. 6, No. 9 doi: 10.5376/mpb.2015.06.0009
Received: 07 Jan., 2015 Accepted: 26 Feb., 2015 Published: 09 Apr., 2015
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Preferred citation for this article:
Panigrahi et al., Diversity analysis in micro-mutant lines of greengram [Vigna radiata (L.) Wilczek] for yield and cold tolerance, Molecular Plant Breeding, 2015, Vol.6, No. 9 1-8 (doi: 10.5376/mpb.2015.06.0009)
Thirty genotypes of greengram including 22 mutant lines, two parents and two standard varieties along with four land races were evaluated in Randomize Block Design (R.B.D.) for yield and component traits.The 30 genotypes showed high genetic divergence (D2) and tolerance to cold at 30, 40 and 10 days old seedling contributed maximum to divergence. On the basis of D2 values using Tocher’s method, the genotypes were grouped into 09 clusters. The 14 genotypes consisting of 12 mutants, one parent and one standard variety was the biggest group. Considering the inter-cluster average D2 values, cluster means for different characters including yield and character complementation in productivity traits, crosses between cluster IV and IX are expected to produce more transgressive in later generation. The Z1-Z2 scatter diagram of genotypes on basis of canonical analysis showed seven clusters almost as on basis of D2 with few exchanges.
Divergence; Cluster; Mutant; Canonical; D2 analysis