Effect of commercial apple rootstocks on some growth and biochemical characteristics of apple leaf cvs. Golden Delicious and Red Delicious

In order to study three vegetative rootstocks M9, M7 and MM106 on some growth and biochemical Characteristics of Apple cvs. "Golden delicious" and "Red Delicious", an experiment in factorial design based on randomized complete blocks with four replications in orchard of Mashhad agricultural research center was performed in 2021. Some characteristics: including trunk diameter, current shoot growth, leaf area, chlorophyll, phenol content, anthocyanin and antioxidant properties in leaf sample were measured. Results showed that in the interaction of rootstock and scion had a significant effect on the trunk diameter, leaf area and anthocyanin. The highest amount of anthocyanin (0.466 mg.g-1FW) at "Golden delicious" on M9 rootstock was measured. Also, "Red Delicious" on MM106 rootstock had the largest trunk diameter (47.81 cm2) and "Golden delicious" on MM106 rootstock showed the highest leaf area (31.45 cm2). The results of this study showed that MM106 rootstock by showing high levels of growth Characteristics compared to the M9 and M7 was placed in a better position. And M9 rootstock by having biochemical Characteristics was better than two other rootstocks. Cultivars on M9 rootstock with highest amount of anthocyanin was suggested as a valuable grafting compounds in terms of health benefits under Mashhad Climatic Conditions.