禾生素和水杨酸对番木瓜PRSV病情及其防御酶活性的影响  

Effects of CTS-N and SA on Papaya Ringspot Virus and Defending Enzyme Activities

作　　者：张荣萍[1] 杨建超[1] 李慧林[1] 陈萍[2] 余雪标[3] 

机构地区：[1]海南大学农学院,海南儋州571737 [2]海南大学园艺园林学院,海南儋州571737 [3]海南大学环境与植物保护学院,海南儋州571737

出　　处：《热带农业科学》2011年第5期65-68,共4页Chinese Journal of Tropical Agriculture

基　　金：海南省自然科学基金(No.808120);海南大学校基金项目(hd09xm62);国家级特色专业[教高函(2009)16号]基金

摘　　要：为了研究禾生素(CTS-N)和水杨酸(SA)对番木瓜(Carica papaya L.)较长期抗番木瓜环斑病毒(PRSV)的效果,测定了CTS-N和SA处理后番木瓜300 d内PRSV病情指数变化和CTS-N处理后关键防御酶活性的变化。结果表明,施用CTS-N后番木瓜PRSV病情指数持续偏低,清水和SA处理的则较高,田间第240、270和300天,CTS-N处理的PRSV病情指数显著低于清水和SA处理。CTS-N处理后,番木瓜叶片中多酚氧化酶(PPO)、超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性均显著高于清水处理。CTS-N浓度越高,番木瓜PPO、SOD、POD活性就越高、越持久。In order to study the effects of salicylic acid（SA） and CTS-N,a kind of agent which contains chitosan（CTS）,on papaya against papaya ringspot virus（PRSV） more longer,disease index（DI） of PRSV after treatment with SA and CTS-N,and activities of defending enzyme of CTS-N treatments were tested.The results showed that,DI of PRSV of CTS-N treatment kept less continually,while those of water treatment and SA treatment were higher.DI of PRSV of CTS-N treatment was higher than SA and water treatments at 240th,270th and 300th days evidently.The activities of polyphenol oxidase（PPO）,superoxide dismutase（SOD）,peroxidase dismutase（POD） of papaya leaves after CTS-N treatments were higher than those of water treatments evidently.As the concentration of CTS-N rose,these activities became higher and longer.

关 键 词：禾生素 水杨酸 防御酶活性 番木瓜环斑病毒 病情指数 

分 类 号：S668.2[农业科学—果树学]