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Title:: Investigation of Survival Rate and Growth Indices of Different Dwarf Apple Scion-stock Combinations

Author(s):: DANG Yanqing1; JIANG Xi1; JIAO Huimin1; WANG Xinjian1; 2; (1.College of Plant Science,Tarim University,Alar,Xinjiang 843300；2.Engineering Laboratory of Characteristic Fruit Tree Production in Southern Xinjiang,Xinjiang Production and Construction Corps,Alar,Xinjiang 843300)

Keywords:: apple; dwarf; scion-stock combination; survival rate; investigation

Abstract:: Compared with the vigorous apple scion-stock combinations of ‘Merlot Fuji/Malus Robusta’ and ‘Yanfu 3/Gaoshan Malus’,the survival rate and the growth indices of stem,branches and leaves of fifteen dwarf apple scion-stock combinations were investigated in this study.For better understanding the results,the correlation analysis and principal component analysis were applied to further process these data.The results showed that there were significant difference among these dwarf apple scion-stock combinations,the apple trees,grafted in T337 and Malus rootstocks,showed high survival rates and excellent growth indices,while those,grafted in SH and Malus Hupehensis var.Pingyiensis rootstocks,showed lower survival rates and slow growth.According to the results of correlation analysis and principal components analysis,it was inferred that the dwarf apple scion-stock combinations of ‘Huarui/SH/Malus’‘Liquan Fuji/M26/Malus’‘Huashuo/M26/Malus’‘Huaxing/M26/Malus’‘Jingxiu Red/M26/Malus’‘Huarui/T337’ and ‘Huashuo/T337’ had the potential to be introduced in Alar.Additionally,nine indices,including survival rate,plant height,scion diameter,stock diameter,joint part diameter,growth branch ratio,short branch ratio,chlorophyll content and petiole length,might be applied to evaluate the effect of dwarf and growth of different dwarf apple scion-stock combinations.