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以分别嫁接在杜梨和豆梨上的砂梨品种‘丰水’为试材,研究了2008和2009年11～12月气温变化和不同砧木对‘丰水’梨叶芽休眠进程的影响,分析叶芽中游离态和束缚态内源多胺种类和含量的变化,结果表明:嫁接在豆梨上的‘丰水’叶芽自然休眠结束的时间要比嫁接在杜梨上的‘丰水’叶芽早10d左右,且游离态和束缚态腐胺(Put)、戊二胺(Cad)、己二胺(Hex)、亚精胺(Spd)和精胺(Spm)5种内源多胺含量开始升高的时间与供试材料叶芽自然休眠结束的时间一致,表明梨叶芽的休眠进程与砧木种类和多胺代谢有密切关系,尤其是与束缚态多胺含量变化的关系更为密切。
The effects of air temperature changes and different rootstocks on the dormancy of leaf buds of ’Fengshui’ pears from 2008 to 2009 were studied by using ’Fengshui’, a sand pear variety grafted on the pears and pears, respectively. The results showed that the end of the natural dormancy of ’Fengshui’ buds bud grafted on Pear pear was 10 days earlier than the ’Fengshui’ bud buds grafted on Pear pear , And the contents of five endogenous polyamines including free and bound Put, glutamine, hexamine, spermidine and spermine (Spm) began to increase The time coincided with the end of the natural dormancy of the sprouts in the test material, indicating that the dormancy progress of the sprouts was closely related to the type of rootstocks and the metabolism of polyamines, especially the changes of the bound polyamines content.