Evaluation of morpho-physiological parameters of Arvi [Colocasia esculenta (L.) Schott)] genotypes using multivariate analysis

The research titled “Evaluation of morpho-physiological parameters of Arvi [Colocasia esculenta (L.) Schott)] genotypes using multivariate analysis” was carried out in Dr. YSP University of Horticulture and Forestry, Solan (H.P). The experiment was laid out in randomized block design comprising 23 diverse genotypes of colocasia, to ascertain the heritability, genetic advance, correlation, path analysis and cluster analysis for yield and other horticultural traits among the genotypes. The PCV and GCV were recorded high for the number of cormels per plant, tuber yield per plot, weight of cormels per plant, plant height and width of cormels and high heritability along with high genetic advance was observed for width of corms, tuber yield per plot, plant height, dry matter percentage in tubers, width of cormels and weight of corms per plant. The correlation coefficient studies showed that tuber yield per plot had a significant and positive correlation with width of corms, number of cormels per plant, weight of corms per plant, length of leaf lamina, number of corms per plant, width of cormels and plant height at both genotypic and phenotypic levels. Path coefficient showed that the maximum positive direct effect on tuber yield per plot was exhibited by width of corms, number of cormels per plant, length of leaf lamina, dry matter percentage in tubers, width of cormels, number of corms per plant and breadth of leaf lamina. The dendrogram reveals three main clusters, each containing multiple sub-clusters based on similarity. Hence, these characteristics should be given more helpful in the selection program of high-yielding genotypes in colocasia.