感染灰斑病大豆叶组织的自由基代谢  

STUDY ON FREE RADICAL MATABIOLISM OF SOYBEAN LEAVES INFECTED BY CERCOSPORIUM SOJINA

作　　者：陈绍江[1] 杨庆凯[2] 王金陵[2] 

机构地区：[1]中国农业大学植物科技学院,北京100094 [2]东北农业大学大豆研究所

出　　处：《植物保护学报》1997年第2期113-116,共4页Journal of Plant Protection

基　　金：自然科学基金

摘　　要：作者以电子自旋共振技术(ESR)为手段对大豆感染灰斑病后叶内自由基代谢的变化进行了研究。结果表明,不同品种病叶内的自由基浓度均远远高于正常叶片,感病品种显著高于抗病品种。病斑周围绿色组织的自由基浓度基本上与正常组织相同,但近病斑组织自由基浓度却明显高于正常组织。病致黄化组织与自然黄化组织相比,前者自由基浓度更高。因此,自由基浓度的高低与组织的病理状态和品种的抗病性有密切关系。ESR was used to study the free radical metabolism in the soybean leaves infected by Cercosporium sojina (Hara) Liu & Guo. The results were as follows : higher density of free radical was found in the infected leaves of both resistant and susceptible cultivars. But susceptible cultivars also had a significantly higher free radical density than the resistant ones. No significant increase of free radical density was found in green tissue surrounding the infected spot , but the bounding tissue near the infected spot showed a significant higher density than the uninfected ones,and the difference was obvious between the diseased and natural yellowish leaves . The mentioned results confirmed that the change of free radical was closely related with the status of the infected leaves as well as the resistant level of the cultivars.

关 键 词：大豆 灰斑病 ESR 自由基 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]