Studies on the Multiplication of Apple Clonal Rootstocks through Cuttings

摘要

The present investigation with ten treatments comprising of IBA application (three concentrations) and its combination with a basal wounding of cuttings (two procedures) were given to three rootstocks viz., i) MM111, ii) MM106 and iii) Merton 793. IBAwas used at 1000, 2000 and 3000 ppm and wounding treatments included i) basal split and ii) vertical incision. In all there were nine combinations of IBA and wounding treatments and compared with control. The highest percentage of rooted cuttings (74.07%), length of main roots (12.42cm), diameter of main roots (3.81 mm), length of main shoot (133.20 cm), diameter of main shoot (173.3mm, total number of leaves (127.10), total phenol content (23.68 mg g'1) and carbohydrate-nitrogen ratio (59.61) were recorded in the cuttings treated with IBA 2000 ppm + split. Among different rootstocks, maximum rooting was recorded in MM 111 rootstock as compared to MM106 and Merton793 rootstocks. Among the IBA and wounding treatments, IBA 2000 ppm in combination with basal split was found to be superior to other treatments in terms of rooting of cuttings, growth and other physiological parameters.