Estimation of Genetic variability, Correlation and Path analysis in Turmeric (Curcuma longa L.) genotypes in Chambal region of Gwalior

Abstract

The experiment was conducted to analyze variation, heritability, genetic advance, correlation and path analysis among 15 diverse genotypes of turmeric for rhizome yield and its contributing traits. Analysis of variance revealed highly significant differences among genotypes for the entire trait studied indicating presence of high genetic variability among the genotypes for various traits. The genotypes Rajapuri, ACG-79 and ACC-48 were promising with respect to rhizome yield per plant and some of the yield contributing traits. High GCV and PCV were observed for the traits number of leaves, leaf lamina width, petiole length, number of mother rhizome and rhizome weight, The characters like number of leaves, plant height, leaf lamina length, leaf lamina width, petiole length, number of mother rhizome and rhizome weight recorded high genetic advance as a per cent of mean coupled with high heritability. Rhizome yield per plant exerted significant and positive correlation with number of mother rhizome and rhizome weight showed major contribution of both these traits in rhizome yield. High positive direct effect on rhizome yield were produced by the rhizome weight followed by number of mother rhizome and number of shoots hence due weightage should be given to these traits for further improvement of rhizome yield in turmeric.