Standardisation of epicotyl and softwood grafting in jack (Artocarpus heterophyllus Lam.)

Abstract

The ivestigation on epicotyl and softwood grafting methods in jack was carried out in the Department of Pomology and Floriculture, College of Horticulture, Vellanikkara, Trichur during the period from June 1987 to April 1989, The objective of the study was to standardise the season, age of rootstock and to find out the effect of intermittent mist on the percentage of success of both epicotyl and softwood grafts, and to study the anatomical changes at the different stages of graft union and factors leading to failure of grafts. The studies revealed that the month of June was most suitable for both epicotyl (83.3 per cent sprouting and 5 per cent survival) under Kerala conditions, eventhough percentage of success was low for softwood grafting.