作　　者： ; ; ; ; ;

机构地区： 华南农业大学

出　　处： 《广东农业科学》 2010年第9期16-19,共4页

摘　　要： 用稻瘟病菌菌株97-151a的菌丝细胞壁激发子(CWE)和玉米小斑病菌孢子悬浮液处理3个品种的玉米幼苗,研究CWE对玉米体内抗病防御酶变化及玉米小斑病发病的影响。研究结果表明:经CWE处理后,各品种玉米幼苗过氧化物酶(POD)、苯丙氨酸解氨酶(PAL)、多酚氧化酶(PPO)和过氧化氢酶(CAT)活性均明显高于对照和未经CWE处理而直接接种病菌孢子悬浮液的幼苗。经CWE处理后,玉米叶片上的病斑数量明显低于对照,且叶片上的病斑多为坏死型病斑。 By inoculated the seedling with CWE which made from strain 97-151a of rice blast pathogen Magnaprthe grisea and the spore suspension, the article studied the activities of resistance related enzymes and the effect of CWE to Helminokosporicum turcicum. The results were as follows： POD, PAL, PPO and CAT of those inoculated seedlings were higher than CK and those seedlings which inoculated not with CWE but with the suspension of spores. Through investigated, the spot quantity of the seedlings which firstly inoculated with CWE then inoculated with spore suspension were obviously smaller than CK, and most of those spots were yellow or salmon pink, rotundity or ellipse; as to CK.

关 键 词： 玉米 玉米小斑病 稻瘟病菌 诱导抗性

领　　域： [农业科学] [农业科学] [农业科学]