Vol. 12 No. 2
Correlation, path coefficient analysis and construction of indices for yield and yield components selection in forage sorghum [Sorghum bicolor (L) Moench]
Author(s): S. KOUR AND U.K. PRADHAN
Abstract: Correlation and path coefficient analyses arernessential tools in selection experiments. They were used to determine directrnand indirect relationships between yield and certain plant characters in 40rndiverse genotypes of forage sorghum. The estimate of broad sense heritabilityrnwas highest for green fodder yield plant-1rnfollowed by number of leaves plant-1.rnAt genotypic level, leaf length (Rg = 0.612) and leaf width (Rg = 0.750) hadrnpositive and highly significant correlation with green fodder yield plant-1,rnwhile for rest of the characters they were non significant. Leaf length (Rp =rn0.552) and leaf width (Rp = 0.616) had positive and highly significantrncorrelations with green fodder yield plant-1 atrnphenotypic level. The leaf width has highest direct effect on fodder yieldrnfollowed by leaf length, plant height and number of leaves plant-1.rnSelection index consisting of plant height at 50 per cent flowering, number ofrnleaves plant-1 and leaf length ismostrnreliable to select biometrical characters in plant breeding programmes for thernimprovement of fodder yield in forage sorghum.
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