关键词：
生菜品种;病害调查;病原鉴定;生菜霜霉病;生菜灰霉病;生菜软腐病
摘 要：
为了解北京市昌平区生菜病害发生情况,为生菜栽培以及生菜病害的防治工作提供必要依据。对北京市昌平区温室栽培的10个生菜品种的病害种类、病株率进行调查,并对病原物进行分离纯化和形态鉴定。调查的10个生菜品种共发生3种病害,分别是生菜霜霉病、生菜灰霉病和生菜软腐病。显微形态观察和鉴定结果表明,生菜霜霉病和生菜灰霉病的病原物分别为莴苣盘梗霉Bremia lactucae和灰葡萄孢Botrytis cinerea。病害调查结果显示,除了‘北散生2号’外,其他生菜品种上均有病害发生。‘北紫生3号’与‘红皱’品种只发生了生菜灰霉病,并且病株率较低,分别是6.8%和9.6%,表现相对抗病。所有调查的品种中,‘北散生2号’品种对以上3种病害的抗性较好。
译 名：
Disease investigation and pathogen identification on different varieties of lettuce in Changping,Beijing
作 者：
LU Die;CHU Mingxin;CHEN Xiaoyu;HAN Yingyan;SHANG Qiaoxia;Beijing Key Laboratory of New Technology in Agricultural Application,National Demonstration Center for Experimental Plant Production Education,Beijing University of Agriculture;Beijing Plant Protection Station;
单 位：
LU Die%CHU Mingxin%CHEN Xiaoyu%HAN Yingyan%SHANG Qiaoxia%Beijing Key Laboratory of New Technology in Agricultural Application,National Demonstration Center for Experimental Plant Production Education,Beijing University of Agriculture%Beijing Plant Protection Station
关键词：
lettuce varieties;;disease investigation;;pathogen identification;;lettuce downy mildew;;lettuce gray mold;;lettuce soft rot
摘 要：
To make clear the occurrence of lettuce diseases in Changping,Beijing and make a reference for cultivation and disease control of lettuce,the diseases on ten lettuce varieties were investigated and pathogens of lettuce diseases were identified.The results showed that 3 kinds of diseases occurred on lettuce and were identified to be lettuce downy mildew,lettuce gray mold and lettuce soft rot.Pathogens of lettuce downy mildew and lettuce gray mold were isolated,purified and identified to be Bremia lactucae and Botrytis cinerea by morphology observation.Except variety of‘Beisansheng No.2',all lettuce varieties were infected by diseases.Only lettuce gray mold were found on‘Beizisheng No.3'and‘Red knit'varieties,with low disease incidence of 6.8% and9.6%,respectively.Among the surveyed lettuce varieties,‘Beisansheng No.2'showed the best resistance to lettuce downy mildew,lettuce gray mold and lettuce soft rot.
