Resistance -induced Effect of Several Chemical Reagents on Cucumber against Pseudoperonospora cubensis  

5种化学试剂诱导黄瓜抗霜霉病的研究(英文)

作　　者：刘高峰[1] 

机构地区：[1]菏泽学院园林工程系,山东菏泽274000

出　　处：《Plant Diseases and Pests》2011年第5期11-13,17,共4页植物病虫害研究（英文版）

基　　金：Supported by Science and Technology Project of Educational Commission of Shandong Province of China( J07WJ48)~~

摘　　要：[ Objectlve] The paper was to compare the induced resistance of several chemicals on cucumber against Pseudoperonospora cubensis [ Method ] When the cucumber seedlings grew to 4-leaf stage, the second true leaf was treated with salicylic acid, oxalate, chitosan, calcium nitrate and Na2HPO4, the activity of protective enzymes in the third leaf was determined after 7 d. At the same time, inoculation test was also conducted after induced treatment, and the disease condi- tion was coumed. [ Result ] These chemical treatments promoted protective enzyme activities （POD, SOD, PAL, PPO） in different degree, improved the ultra-weak luminescence, and reduced the disease index of cucumber leaves. [ Conclusion] Five chemical treatments expressed good effects on induced resistance. Among the treatments, oxalate had the best induced effect, followed by salicylic acid, chitosan, Na2 HPO4 and calcium nitrate.[ Objectlve] The paper was to compare the induced resistance of several chemicals on cucumber against Pseudoperonospora cubensis [ Method ] When the cucumber seedlings grew to 4-leaf stage, the second true leaf was treated with salicylic acid, oxalate, chitosan, calcium nitrate and Na2HPO4, the activity of protective enzymes in the third leaf was determined after 7 d. At the same time, inoculation test was also conducted after induced treatment, and the disease condi- tion was coumed. [ Result ] These chemical treatments promoted protective enzyme activities （POD, SOD, PAL, PPO） in different degree, improved the ultra-weak luminescence, and reduced the disease index of cucumber leaves. [ Conclusion] Five chemical treatments expressed good effects on induced resistance. Among the treatments, oxalate had the best induced effect, followed by salicylic acid, chitosan, Na2 HPO4 and calcium nitrate.

关 键 词：CUCUMBER Pseudoperonospora cubens/s Induced resistance Ultraweak luminescence China 

分 类 号：S436.421.11[农业科学—农业昆虫与害虫防治]