不同砧木嫁接甜柿苗期生长生理特性及亲和性评价

Evaluation on Affinity,Growth Trait and Physiology Indicators of Persimmon Grafted on Different Stocks

以浙江柿、君迁子、油柿及537号和514号2种不同柿品种为砧木的‘阳丰’甜柿嫁接苗为试材,对不同砧木的嫁接苗高生长、抗氧化物酶活性、丙二醛(MDA)含量及叶绿素含量等指标的年动态变化进行观测分析,初步评价不同砧木的甜柿嫁接苗苗期亲和性差异。结果表明:(1)以浙江柿、柿537号、柿514号为砧木的甜柿嫁接苗生长速率高于以油柿和君迁子为砧木的嫁接苗;(2)以油柿为砧木嫁接苗的叶绿素及可溶性蛋白含量最低,嫁接苗出现提前衰老的现象;(3)以油柿为砧木的嫁接苗MDA含量均高于其余4种嫁接苗,在生长后期表现更明显;而以油柿为砧木的嫁接苗抗氧化物酶活性在生长前期低于其余4种嫁接苗,在生长后期高于其余4种嫁接苗,砧穗间相互适应性较弱;(4)根据各指标的年动态变化,结合生长及生理指标的主成分分析和隶属函数法分析,得出5种不同砧木的甜柿嫁接苗苗期亲和性强弱顺序:浙江柿>柿537号>柿514号>君迁子>油柿。浙江柿、柿537号、柿514号适宜作‘阳丰’甜柿的砧木,而油柿不宜作‘阳丰’甜柿的砧木。

Taking‘ PCNA Youhou＇ persimmon grafted on the root-stocks of Diospyros glaucifolia, D. lotus, D. ole- ifera, D. kaki of‘537＇ , ‘514＇ As test material, the annual dynamic change of growth, activity of membrane lipid antioxidant enzymes, content of malomdiadehyde and chlorophyll of different grafted persimmon during seedling peri- od were studied. The results were used to evaluate the graft compatibility of different grafted persimmon. It was indi- cated that ： （ 1 ） The growth rate of D. glaucifolia, D. kaki of ‘ 537＇ ,‘514＇ grafted seedlings was higher than that of D. lotus, D. oleifera grafted seedlings. （2） The contents of chlorophyll and soluble protein were the least in D. oleifera grafted seedlings and it tended to show early aging . （3） The contents of malomdiadehyde was higher than that of the other grafted seedlings, especially when the root-stocks was D. oleifera during the later stage of growth. While its activity of antioxidant enzymes was lower than that of the others in the early growth stage and higher during the later stage of growth, and the adaptation between stocks and scion was weak. （4） Analyzing the growth and physiology indicators of the grafted persimmon by principal component and membership function analysis, it turned out that the affinity order was： D. glaucifolia 〉D. kaki of ‘537＇ 〉 D. kaki of ‘514＇ 〉 D. lotus 〉 D. oleifera.Combining the annual dynamic change of indicators, the results showed that the D. glaucifolia, D. kaki of ‘537＇ and ‘514＇ were suitable to ＇PCNA Youhou＇ , while the D. oleifera was not.