病原菌诱导黄瓜对其主要病害的抗病反应  

Cucumber Resistance Induced by Pathogens to Fungal Diseases

作　　者：石延霞[1] 张楠[1] 于洋[1,2] 傅俊范[2] 李宝聚[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081 [2]沈阳农业大学,沈阳110161

出　　处：《中国生物防治》2008年第4期312-317,共6页Chinese Journal of Biological Control

基　　金：国家自然科学基金(30400060);国家十一五科技支撑计划(2006BAD07B02，2006BAD08A08-12，2006BAD17B07);农业部蔬菜遗传与生理重点开放实验室项目

摘　　要：以5种黄瓜主要病原菌作为诱导抗病因子,研究其对黄瓜主要病害的作用,结果发现黄瓜经病原菌诱导后,可以产生对诱导病原菌及其它病原菌引起病害的交互保护作用,并且诱导的交互保护作用与诱导浓度、诱导间隔期、不同品种存在相关性。诱导效果不随诱导接种浓度的升高而升高。在黑星病菌对霜霉病菌的诱导作用中,以浓度为1×10^2个/ml的黑星病菌孢子悬浮液的诱导效果最好,诱导间隔期为48h黄瓜黑星病菌对霜霉病的交互保护作用最明显,抗性品种的交互保护作用明显好于感病品种;炭疽病菌可诱导黄瓜有效抑制褐斑病的发生,但挑战接种褐斑病菌后,却促进了炭疽病的发生。诱导接种炭疽病菌后再挑战接种褐斑病菌12d,对褐斑病的防效为92.07%。A study was carried out to determine if pathogens could induce cross-protection of cucumber against the diseases caused by itself or other pathogens. A correlation between the protection effect and inoculation concentration, inoculation interval, and cultivars was confirmed. There was no positive correlation between the protection effect and induction concentration. The best relative effect of cross-protection was found when spore concentration of Cladosporium cucumerinum was adjusted to 1× 10^2 spores/ml for 48 h interval. And it was much better in resistant cultivars than in susceptible ones. Meanwhile, after challenged by Corynespora cassiicola （CC） the cucumber induced by Colletotrichum orbiculare （CO） produced great resistance to brown-spot, but that increased the development of anthracnose. The control effect to brown-spot was 92.07% after inducing with CO and challenging with CC for 12 d.

关 键 词：病原菌 黄瓜 主要病害 诱导抗病性 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治] S476[农业科学—植物保护]