马铃薯品种对早疫病、晚疫病和疮痂病的田间抗性评价  

Evaluation on Field Resistance of Potato Varieties to Early Blight,Late Blight and Scab

作　　者：赵艳群[1] 武奇伟 任飞娥 赵金瑞 赵文忠[1] ZHAO Yanqun;WU Qiwei;REN Feie;ZHAO Jinrui;ZHAO Wenzhong(Yulin Agricultural Technology Service Center,Yulin,Shaanxi 719000,China)

机构地区：[1]榆林市农业技术服务中心,陕西榆林719000

出　　处：《中国马铃薯》2021年第2期164-169,共6页Chinese Potato Journal

基　　金：陕西省省级农作物病虫防控项目资金(陕农计财[2020]24号)。

摘　　要：早疫病、晚疫病和疮痂病是3种重要的马铃薯病害。为指导科学开展品种选育推广和促进农药减量控害,在陕西省榆林市进行了不同品种马铃薯对早疫病、晚疫病和疮痂病的田间抗病性评价研究。早疫病和晚疫病抗性试验以‘紫花白’为对照,疮痂病抗性试验以‘冀张薯12号’为对照,调查各病害的田间发病率和病情指数,进行抗性鉴定。结果表明,供试品种中75.0%的品种高抗或抗早疫病,46.7%的品种抗或中抗晚疫病,33.3%的品种中抗疮痂病。仅‘陇薯13号’对早疫病高抗,无晚疫病和疮痂病的高抗或免疫材料。‘青薯9号’、‘丽薯7号’和‘安1304-32’均抗晚疫病且产量较高,可在榆林市推广,‘陇薯7号’、‘冀张薯12号’、‘榆薯3号’、‘榆薯4号’、‘榆薯5号’和‘丽薯6号’为晚疫病高感品种,在加强病害防控的前提下,可在晚疫病轻发生区种植。疮痂病高抗品种缺乏,需进一步引进和研究。Potato early blight,late blight and scab are serious diseases.Field resistance of potato varieties to early blight,late blight and scab was evaluated to provide references for breeding and promotion of pesticide reduction and damage control in Yulin City,Shaanxi Province.Field incidence rate and disease index of the potato diseases were investigated in field trial to assess potato variety resistance,by using'Zihuabai'as the control for early blight and late blight,and'Jizhangshu 12'as the control for scab.The results showed that 75.0%of the tested varieties were highly resistant or resistant to early blight,46.7%were resistant or moderately resistant to late blight,and 33.3%were moderately resistant to scab.Only'Longshu 13'was highly resistant to early blight,but no variety with high resistance or immune to late blight and scab was found.'Qingshu 9','Lishu 7'and'An 1304-32'were resistant to late blight with high yield,which could be promoted in Yulin City.'Longshu 7','Jizhangshu 12','Yushu 3','Yushu 4','Yushu 5'and'Lishu 6'were highly susceptible to late blight,which could be planted in low-risk region of late blight under the premise of enhancing disease control.Varieties highly resistant to scab are lack,so it needs to be introduced and studied further.

关 键 词：马铃薯 疮痂病 早疫病 晚疫病 田间抗性 

分 类 号：S532[农业科学—作物学]