定西市部分主栽马铃薯品种块茎晚疫病发病情况调查  

Investigation of Incidence of Main Potato Cultivars for Potato Tuber Late Blight in Dingxi City

作　　者：禹娟红[1] 贺莉萍[1] 

机构地区：[1]定西师范高等专科学校生化系,甘肃定西743000

出　　处：《中国马铃薯》2014年第6期354-357,共4页Chinese Potato Journal

基　　金：甘肃省高等学校研究生导师计划项目(121901);甘肃省教育厅第二批科研项目(1127B-03)

摘　　要：2012年在马铃薯收获期间,对定西师范高等专科学校马铃薯试验田5个定西市主栽马铃薯品种‘费乌瑞它’、‘早大白’、‘新大坪’、‘陇薯3号’和‘克新1号’块茎晚疫病发病情况进行了调查。结果表明:5个品种中晚疫病发病率均较高,且不同品种存在明显差异,由高到低依次为‘费乌瑞它’(52.54%)、‘早大白’(47.49%)、‘新大坪’(46.21%)、‘克新1号’(23.42%)、‘陇薯3号’(16.03%)。说明‘陇薯3号’对晚疫病的抗性最好,其次为‘克新1号’,‘费乌瑞它’的抗性最差,‘新大坪’和‘早大白’对晚疫病的抗性较低。除晚疫病之外,在不同品种中还发现了粉痂病、黑痣病和疮痂病,具体为:‘费乌瑞它’中疮痂病的发生频率为10.59%;‘新大坪’中粉痂病的发生频率为4.12%;‘早大白’中黑痣病的发生频率为8.94%;‘克新1号’中粉痂病、黑痣病和疮痂病的发生频率分别为1.27%、3.80%和3.80%;‘陇薯3号’中粉痂病和疮痂病的发生频率分别为1.91%和2.67%。Late blight incidence of tuber of five main potato cultivars planted in the experimental field of Dingxi Teachers College （＇Favorita＇, ＇Zaodabai＇, ＇Xindaping＇, ＇Longshu 3＇, and ＇Kexin 1＇ ） was investigated during the potato harvest in 2012. The disease rate of late blight of all of the cultivars was relatively high, but obvious difference was found in the cultivars tested, with the rank arranged in descend order： ＇Favorita＇ （52.54%） 〉 ＇Zaodabai＇ （47.49%） 〉 ＇Xindaping＇ （46.21% ~） 〉 ＇Kexin 1＇ （23.42% ~） 〉 ＇Longshu 3＇（16.03% ）. The data showed that late blight resistance of ＇Longshu 3＇ was the best, followed by ＇Kexin 1＇. Late blight resistance of ＇Favorita＇ was the worst, and ＇Xindaping＇ and ＇Zaodabai＇ was low. In addition to late blight, powdery scab, black scurf and common scab also appeared in different cultivars. For＇Favorita＇, the incidence of common scab was 10.59%; for ＇Xindaping＇, powdery scab was 4.12%; for＇Zaodabai＇, black scurf was 8.94%; and for ＇Kexin 1＇, powdery scab, black scurf and common scab was 1.27%, 3.80% and 3.80%, respectively. Powdery scab and common scab were also found for ＇Longshu 3＇, with the incidence being 1.91% and 2.67%, respectively.

关 键 词：主栽马铃薯品种 块茎 晚疫病 发病率 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]