中国水稻科学

• 研究报告 • 上一篇    下一篇

稻纹枯病菌对井岗霉素抗药性检测、监测和诱导

周明国;叶钟音;刘经芬   

  1. 南京农业大学,南京210014
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-06-05 发布日期:1991-06-05

The Resistance of Theatephorus cucumeris to Jinggangmycin: Detection,Monitoring and Induction of Thanatephorus cucumeris

Zhou Mingguo; Ye Zhongyin; Liu Jingfen   

  • Received:1900-01-01 Revised:1900-01-01 Online:1991-06-05 Published:1991-06-05

摘要: 检测了云南、浙江、江苏. 安徽、黑龙江、吉林等不同用药水平地区的 20个水稻纹枯病菌Thanatephorus cucumeris (Frank) Donk 菌株对井岗霉素的抗性,发现各地稻纹枯病菌群体及个体对药剂的敏感度与野生菌株没有显著差异。证明井岗霉素尽管在我国部分地区施用已有l5年左右,田间迄今并没有出现抗药性问题。1986—1989年对6个点监测结果表明该菌对井岗霉素的敏感度在年度间没有明显变化,室内抗药性诱导,也未能获得抗性菌株。

关键词: 稻纹枯病菌, 井岗霉素, 抗药性, 监测, 诱导

Abstract: The resistance to Jinggangmycin of more than 420 isolates of Thenatephorus cucumeris(Frank) Donk. which causes the rice sheath blight in the areas where Jinggangmycin had been applied at different levels was detected. The sensitivity of populations and individuals of the pathogen in the treated area to Jinggangmycin is similar to that of natural wild pathogen. The results showed that T. cucumeris has not developed the resistance to Jinggangmycin in the investigated areas although Jinggangmycin has beenused in some areas for about fifteen years. The sensitivity of isolates to Jinggangmycin had not changedfrom 1986 to 1989 in the monitoring site and none of isolate resistant to Jinggangmycin had been induced onPSA with 200 μg/ml Jinggangmycin for fifty days.

Key words: Thenatephorus cucumeris, Jinggangmycin, Fungicide resistance, Rice sheath blight