Asian Journal of Bio Science

L. Venkatesh ¹, Niranjana Murthy ², S. D. Nehru ³, Manjappa ¹

Affiliations
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
2 All India Co-Ordinated Research Network on Underutilized Crops, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
3 All India Co-Ordinated Research Project on Chickpea, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN

Abstract

One hundred germplasm accessions of grain amaranth were evaluated during Kharif-2011 for assessing the genetic variability present in the material for grain yield and yield related traits. Analysis of variance revealed significant differences among the genotypes for all the characters studied. High PCV and GCV was observed for stem girth, plant height, panicle length and grain yield per plant. On the other hand, low PCV and GCV were observed fordays to maturity and grain protein content. All the traits studied exhibited high heritability. High genetic advance as per cent of mean was observed for days to 50 per cent flowering, stem girth, number of leaves per plant, plant height, panicle length, panicle width and grain yield per plant indicating scope for improvement of the traits of interest through hybridization and selection.

Keywords

Heritability, Variability, Genetic Advance.

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L. Venkatesh ¹, Niranjana Murthy ², Manjappa ¹, S. D. Nehru ³

Affiliations
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
2 All India Co-Ordinated Research Network on Underutilized Crops, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
3 All India Co-ordinated Research Project on Chickpea, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN

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.

Keywords

Grain Amaranth, Grain Protein, Character Association, Path Co-Efficient Analysis.

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