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Character association and path co-efficient analysis for various traits in grain amaranth (Amaranthus spp.)

Character association and path co-efficient analysis for various traits in grain amaranth (Amaranthus spp.)

L. VENKATESH1, NIRANJANA MURTHY2, MANJAPPA1 AND S.D. NEHRU3

Journal Title:Asian Journal of Bio Science
Abstract


One hundred genotypes of grain amaranth were used to estimate correlation and path co-efficients among 10 quantitative traits including grain yield in grain amaranth. At the phenotypic level, stem girth, number of leaves per plant, plant height, panicle length and seed weight exhibited significant positive correlation with grain yield. While, its association with panicle width was negative and significant. Path co-efficient analysis revealed maximum positive direct effect of number of leaves per plant (0.575) on grain yield followed by seed weight (0.234), panicle length (0.221) and plant height (0.124). The study suggests that selection of varieties with higher number of leaves per plant, seed weight, panicle length and plant height will help the breeder to select the genotypes which can give better grain yield

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