Study on Genetic Variability Estimates of Jackfruit [Artocarpus heterophyllus Lam.] Germplasm at Northern Regions of Tripura State, India

Abstract

The experiment was undertaken, during 2019-21, for the purpose of estimation of the genetic variability existing within different quantitative traits among various locally available jackfruit (Artocarpus heterophyllus Lam.) germplasm at northern region of Tripura state. High magnitudes for G.C.V., heritability, genetic advance and genetic advance as percentage of mean were observed for yield, fruit productivity, fruit stalk length and fruit core weight, which might have more role in  improvement of these traits through proficient selection process. Comparatively low genetic advance with high heritability estimates for some of the traits like - seed width, seed length and total sugar content of ripe fruit, could be indicating towards the fact that direct selection based on these characters would be less effective.  Characters such as, number of fruit per cluster, shelf life of fruit and reducing sugar content exhibited wide range of differences between G.C.V. and P.C.V. Hence improvement of these traits by means of selection may not be effective at all.