毛白杨无性系有机物质含量和酶活性与抗性关系研究  

Study on the Relationship between Organic Materials Inclusion and Enzyme Activity of Populus tomentosa Clones and the Resistance to Apriona germari

作　　者：李继东[1] 毕会涛[1] 冯建灿[1] 李淑玲[1] 张平 

机构地区：[1]河南农业大学林学园艺学院,郑州450002 [2]郑州市环境保护局,郑州450007

出　　处：《河南科学》2006年第4期517-520,共4页Henan Science

基　　金：河南省科技攻关项目(981050002)

摘　　要：对抗虫、感虫毛白杨无性系叶片、树皮和木质部的总糖、总酚和单宁含量,以及树皮内多酚氧化酶和过氧化物酶的活性进行了研究.结果表明,树皮中总糖含量与成虫拒食毛白杨树皮无关,不同抗性水平无性系总糖含量差别不大;总酚和单宁含量是抗性的重要指标;多酚氧化酶活性与抗性紧密相关,过氧化物酶活性在感虫无性系较高,是杨树对虫害的应激反应.The author select 5 insect-resistant and 5 insect-attacked Populus tomentosa clones among 371 clones to find out the key resistance-related physiological parameter of Populus tomentosa to Apriona germari. Measurement was done on the content of total sugar, total phenolic, tannin and the activity of POD and PPO as well. The result show the content of total sugar is not notably varied among the clones. The content of total phenolic and tannin could be important guideline for resistance. The activity of PPO is tightly related to resistance. POD will be more active when the clones are attacked, which is response of poplar to insects.

关 键 词：毛白杨 桑天牛 抗性 生理指标 

分 类 号：S792.117[农业科学—林木遗传育种] S722.36[农业科学—林学]