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采用聚丙烯酰胺凝胶垂直板电泳系统，对河南早熟杏和桃杏１０个品种进行了过氧化物同工酶的测定。其结果表明，杏树酶谱具多态特性，其主导酶谱Ｒｆ为０４４～０４５；每个品种均有特征酶谱（Ｒｆ），或以酶带数目、宽度、活性强弱相区别。同时，采用排序方法及系统聚类分析方法，对杏树１０个品种的过氧化物同工酶酶谱的相似程度进行研究结果发现：两种方法研究的结果与其酶谱分类、形态分类非常吻合，从而为杏树品种的鉴定与检验及其合理划分，提供了新的依据和手段。
The polyacrylamide gel vertical plate electrophoresis system was used to determine the peroxidase isoenzyme in ten varieties of precocious apricot and peach apricot in Henan. The results showed that the polymorphism of apricot tree was polymorphic, and its dominant enzyme spectrum was 0.44-0.45. Each cultivar had characteristic enzyme spectrum (Rf), or the number of bands, the width and the activity were strong Difference At the same time, using the ranking method and cluster analysis method, the similarity of peroxidase isozymes in 10 varieties of almond trees was studied. The results of two methods were in good agreement with their classification and morphological classification , Thus providing a new basis and means for the identification and testing of apricot varieties and their rational division.