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《Northern Horticulture》 2009-08
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Changes of Activities of Defensive Enzymes in Pepper Leaves Treated with Chito-Oligosaccaride and Inoculated with Powdery Mildew

XIAO Zhong-jiu1,2,3,JIANG Xuan-li1,2,LI Xiao-xia3,ZHANG Su-qin1 (1.Agriculture College,Guizhou University,Guiyang,Guizhou 550025,China;2.Guizhou University,Key Laboratory of Guizhou Mountainous Agricultural Pest,Guiyang,Guizhou 550025,China;3.Zunyi Normal College,Zunyi,Guizhou 563002,China)  
The changes of activities of defensive enzymes were tested systematically in Zunyi Capsicum annuum treated with chito-oligosaccarides and inoculated with Leveillula taurica(Lev.) Arn in order to confirm the resistant mechanism of pepper to powdery mildew.The result showed that the activities of polyphen oloxidase(PPO),Peroxidase(POD) and phenylalanine am-monialyase(PAL)increased apparently compared with contrast plants,and the peaks of activities of PAL and PPO were earlier(inoculated after treated).So there was correlativity between the powdery mildew resitance ex-pression and the increase of activities of defensive enzymes.
【Fund】: 贵州省科学技术基金资助项目(黔科合J字[2009]2104号);; 贵州省科学技术基金资助项目(黔科合J字(2006)2052号);; 贵州大学人才科研基金资助项目
【CateGory Index】: S641.304.1
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