College of Plant Protection;
Northwest A & F University;
Yangling 712100;
P.R.China;
Institute of Plant and Environmental Protection;
Beijing Academy of Agricultural and Forestry Sciences;
Beijing 100089;
P.R.China;
黄瓜; 幼苗; 害虫; 苯基丙氨酸氨裂解酶; 多酚氧化酶; 过氧化物酶;