Genotypic association and path coefficient analysis in ashwagandha (Withania somnifera)

Genotypic and phenotypic correlations and path coefficient for seven characters were studied in 36 early generation selections in F2 population of wide crosses (WS 20 X Wild and WS 22 X Wild) and seven genotypes of ashwagandha. Results indicated that root yield was significantly and positively correlated with plant height, stem branches, root length, root diameter, root branches, and seed yield. All the component characters studied were significantly and positively associated among themselves, except root branches with seed yield. Path coefficient analysis showed highest positive direct and indirect effect of plant heightand stem branches on rootyield. Indirect effects of other component characters were high through plant heightand stem branches on root yield. Selection for high plant-height and stem branches appeared to be useful for improving root yield.