【作者】 杜蕙； 王生荣；

【Author】 DU Hui WANG Sheng-rong ( College of Pratacultural, Gansu Agricultural University, Lanzhou 730070, China; Institute of Plant Protection, Gansu Academy of Agriculture Sciences, Lanzhou 730070, China)

【机构】 甘肃农业大学草业学院；

【摘要】 通过对不同辣椒品种茎部的POD、PPO、PAL活性的测定,结果表明,感病前,辣椒抗病品种茎部的3种酶活性均高于中抗和感病品种。接种辣椒疫霉菌后,辣椒品种茎部的3种酶活性都有所增加,抗、感病各品种的3种酶活性曲线均呈现两个峰值。抗病品种的两个峰值均高于中抗和感病品种,抗病品种 POD、PPO、PAL活性升高幅度也大于感病品种。更多还原

【Abstract】 The activities of peroxidase (POD), polyphenol oxidase (PPO) and phenylalnine ammonia-lysae (PAL) were studied on the healthy and infected pepper stems respectively. The results showed that the three enzyme activities were higher in the resistant varieties than that in susceptible ones on the healthy pepper stems. The three enzyme activities increased after inoculation with Phytophthora capsici and showed two peaks in both resistant and susceptible varieties. The increasee of the enzyme levels was greater in resistant pepper varieties than that in susceptible ones. The enzyme activity peaks of the resistant varieties were higher than the susceptible ones.更多还原