杏品种叶芽的保护酶变化与抗寒性的关系  

Relationship between the Changes of Protective Enzyme and the Cold Tolerance of Leaf Buds of Apricot Varieties

作　　者：陈钰[1] 郭爱华[2] 姚月俊[2] 姚延梼[2] 

机构地区：[1]云南农业大学,云南昆明650000 [2]山西农业大学林学院,山西太谷030801

出　　处：《安徽农业科学》2008年第4期1350-1350,1464,共2页Journal of Anhui Agricultural Sciences

基　　金：山西省自然基金(20051075)

摘　　要：[目的]为选育和鉴定杏的抗寒品种提供理论依据。[方法]观察6个抗寒性不同的杏品种休眠期叶芽的SOD、POD酶活性变化,研究酶变化与抗寒性的关系。[结果]抗寒性强的串枝红SOD酶活性1月份比12月份增加了1.89倍,抗寒性较强的兰州杏和鸡蛋杏分别增加了1.73和1.61倍,抗寒性较弱的意大利2号的增加量最少。各品种1月份的POD酶活性普遍增长,但上升幅度各不相同,增长最明显的是串枝红和兰州杏,分别由12月份的958、3 U/[g.(FW)]增加到1月份的1911、46 U/[g.(FW)],2月份又有所下降。[结论]不同杏品种之间存在抗寒性差别,串枝红和兰州杏的SOD、POD酶活性保持较好,抗寒性较强,可利用品种的抗寒资源进行育种。[Objective] The aim of the study was to provide theoretical basis for breeding and identifying cold-resistant varieties of apricot. [Method] Changes in SOD and POD activities in leaf bud during dormant period of 6 apricot varieties with different cold-resistances were observed to study the relationship between enzyme change and cold-resistance, [Result] SOD activity in Chuanzhihong with strong cold-resistance increased by 1.89 times in January than that in December and that in Lanzhouxing and Jidanxing with stronger cold-resistance increased by 1.73 and 1.61 times resp. ,and that in Italy 2 with weaker cold-resistance increased least.POD activity in each variety increased generally in January with different increments and that in Chuanzhihong and increased most obviously,increasing from 95 and 83 U/[g· （FW） ] in December to 191 and 146 U/[g· （FW） ] in January resp. ,and then decreased a little in February, [ Conclusion] There was cold-resistance difference among different apricot varieties. Chuanzhihong and Lanzhouxing can keep SOD and POD activities better and had stronger cold-resistance.The cold-resistance difference among varieties could be utilized to breed varieties with better cold-resistance.

关 键 词：杏 抗寒性 SOD酶活性 POD酶活性 

分 类 号：S662.2[农业科学—果树学]