摘要
以不同抗病品种的番茄幼苗为试材,研究了番茄褐斑病菌毒素对番茄叶片POD、PAL及PPO活性的影响。结果表明,抗、感病品种番茄幼苗用毒素处理后,POD、PAL、PPO活性均比对照有所提高,且随处理时间延长,其活性变化呈先升高后降低趋势,即POD活性在处理后0～24h逐渐升高,之后下降,PPO和PAL活性在处理后0～36h升高,而后活性下降;随毒素浓度增加,POD、PAL、PPO活性变化也呈先升高后降低趋势;3种酶活性与品种抗病性呈正相关关系。
The effects of Helminthosporiurn carposaprum toxin on the activities of POD ,PAL and PPO in the leaves of different tomato cuhivars were studied. The activities of POD, PAL and PPO from the resistant and susceptible cuhivars were higher than that of the control. As the treating time＇s expanding ,tire activities increased rapidly at the beginning ,then decreased . The activity of POD was increased within 0-24 h, then decreased; and the activities of PPO and PAL were increased within 0 - 36 h,then decreased gradually after treatment. As the toxin concentration of increasing , the activities of POD , PAL and PPO were increased rapidly at the beginning ,then decreased as well. There were a significant positive correlation between enzyme activities and disease resistance of eggplant cuhivars.
出处
《湖北农业科学》
北大核心
2009年第2期338-340,共3页
Hubei Agricultural Sciences
基金
河南省自然科学基金项目(06-07-02A)
河南科技学院高层次人才科研资助项目(030109)
关键词
番茄褐扛王病菌
毒素
酶活性
Helminthosporiurn carposaprum
toxin
enzyme activity
