Effect of age old rootstocks on growth pattern of grafted scions in jackfruit (Artocarpus heterophyllus Lam)

Abstract

An attempt to study the effect of age old rootstocks on growth pattern of grafted scions in jackfruit was done by adopting softwood grafting at monthly intervals during July, 2015 to December, 2015 with twelve to seventeen months old rootstocks. The graft success per cent, number of leaves and length of new shoots were significantly higher in 14 months old rootstocks was due to environmental effect, whereas, the least graft success per cent was in 17 months old rootstocks was due to the influence of tree phenology. Interestingly, it is difficult to study the effect of influence of age old rootstock on graft success rate with the interruption of the environmental effect and the tree phenology. Hence, a strategy was suggested to conduct an experiment to study the effect of influence of rootstocks on graft success per cent by eliminating the experimental errors.