Effects of M 9 and MM 106 Rootstocks on Agromorphological Characteristics of 'Golab Kohanz' and 'Delbarstival' Apple Cultivars in Abhar Region of Iran

摘要

Dwarf rootstocks find use to increase yield in a unit area. Therefore, the aim of the study is to compare and examine M 9 dwarf and MM 106 semi-dwarf rootstocks on some vegetative and yield traits of 'Golab-kohanz' (Iranian) and 'Delbarstival' (commercial foreign) cultivars of apple, grown at orchard in Abhar, Iran. Results showed that the 'Golabkohanz' on the MM 106 rootstock had the most mean shoot length of the current year (39.97 cm) and tree height (198.33 cm). Also 'Golab-kohanz' (6.40 cm), (33.58 cm 2 ) and MM 106 rootstock (7.39 cm), (33.09 cm 2 ) had the most trunk diameter and trunk cross sectional area respectively. The most internode length of the current year belonged to MM 106 rootstock (5.12 cm). 'Delbarstival' (141 cm) and M 9 Rootstock (133 cm) had the most canopy width tree. Then, 'Delbarstival' on M 9 rootstock had the most yields of trees (14.61 kg tree -1 ), yield in hectare (40.56 ton ha -1 ) and yield efficiency (519.33 kg cm 2 ). Pursuant to results, among experimented rootstocks and cultivars, 'Delbarstival' on M 9 rootstock is the proper compound for achieving the largest yield cropping in intensive planting orchards system in Abhar climatic conditions.