油菜黑胫病对油菜产量及农艺性状的影响  

Effects of Leptosphaeria Biglobosaon Grain Yield and Yield Related Traits of Oilseed Rape

作　　者：荣松柏[1] 胡宝成[1] 陈凤祥[1] 吴新杰[1] 侯树敏[1] 费维新[1] 李强生[1] 

机构地区：[1]安徽省农业科学院作物研究所,安徽合肥230031

出　　处：《作物杂志》2015年第6期159-161,F0003,共4页Crops

基　　金：国家油菜产业技术体系病虫草害防治与监控科学家岗位(CARS-13);院长青年创新基金(15B0227)

摘　　要：通过人工接种和大田自然发病调查两种方法,探讨了油菜黑胫病不同病害级别对油菜单株产量及农艺性状株高、分枝数、角果数、角粒数和千粒重的影响。结果表明:(1)不同级别间病株产量差异显著,产量损失随病害侵染程度的增加而加重,当病害级别达5级时,3个试验品种单株平均产量损失率达50.5%;(2)产量性状与病害级别间呈显著或极显著负相关,影响顺序为角粒数>角果数>千粒重>分枝数>株高。为油菜黑胫病的预测预报和抗病品种选育提供帮助。The effects on grain yield and some agronomic traits of different disease levels of oilseed rape infected by Leptosphaeria biglobosa was studied by the means of artificial inoculation and natural induction. Significant variations were identified on plant height, pod number, grain number and thousand-grain weight. Some variations existed among different damage degrees of these traits. The maximum yield loss was up to 50.5 %, when the disease level was 5 There were significantly or very significantly negative correlation between yield traits and disease levels. The order of effect was pod 〉 pod number 〉 grain weight 〉 branches number 〉 plant height. This study may provide guidance for resistance breeding and cultivar deployment.

关 键 词：油菜 黑胫病 危害级别 产量 农艺性状 

分 类 号：S435.65[农业科学—农业昆虫与害虫防治]