Effects of Different Rootstocks on Tree Growth and Fruit Quality of Youhou PCNA Persimmon
Effects of different rootstocks on the growth and fruit quality of Youhou persimmon(PCNA)were investigated to select suitable rootstock-scion combinations in the low altitude area of Guangxi Zhuang Autono-mous Region.Youhou persimmon was grafted onto three kinds of rootstocks such as Date plum(Diospyros lo-tus L.),Silvestris persimmon(D.kaki var.Silvestris)and Gongcheng Shuishi(D.kaki Thunb.).The tree development,shoots composition,fruit quality and coloring of each rootstock-scion combination were meas-ured.The results showed that the rootstock-scion combinations of Youhou/Gongcheng Shuishi and Youhou/Silvestris persimmon had vigorous growth potential,and the proportions of medium-long shoots(20-40 cm)and long shoots(＞40 cm)were 27.24％and 47.42％,and 10.82％and 14.43％,respectively.On the con-trary,the rootstock-scion combination of Youhou/Date plum presented weaker growth vigor,and the propor-tion of medium and short shoots(0-20 cm)accounted for 79.40％.The average single fruit weight and vita-min C content of Youhou/Gongcheng Shuishi rootstock-scion combination were significantly higher than those of Youhou/Silvestris persimmon and Youhou/Date plum.The average single fruit weight(179.36 g),solu-ble solid content(16.84％)and fruit coloring of Youhou/Gongcheng Shuishi rootstock-scion combination were significantly better than those of the other combinations.When planting Youhou PCNA persimmon in low altitude area of Guangxi Zhuang Autonomous Region,Gongcheng Shuishi was a better rootstock,followed by Silvestris persimmon and Date plum.
persimmonYouhourootstockgrowth and developmentfruit quality
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