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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (4): 239-243.

所属专题： 玉米

• 植物保护 农药 • 上一篇    下一篇

寄主选择压力下玉米弯孢菌叶斑病菌致病性分化及生物学特性研究

隋鹤,高增贵,庄敬华,薛春生,张小飞,赵柏霞   

  • 收稿日期:2009-11-05 修回日期:2009-12-02 出版日期:2010-02-20 发布日期:2010-02-20
  • 基金资助:

    国家“十一五”科技支撑项目

Pathogenecity Differentiation and Biological Character of Curvularia lunata under the host selection pressure

  • Received:2009-11-05 Revised:2009-12-02 Online:2010-02-20 Published:2010-02-20

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摘要：

摘要：采用寄主选择压力下得到的玉米弯孢叶斑病菌菌株作为研究对象，对其进行致病力分化测定，同时比较其在温度、pH值、碳源、氮源利用和光照等条件下的差异。结果表明：经继代培养得到的菌株存在致病性差异，并且在相同寄主上能产生不同类型的病斑，病斑大小、形状存在差异，说明经继代培养得到的菌株有致病性分化现象。不同致病类型的菌株的菌落形态、最适碳氮源、最适pH值有所不同。

关键词: 烤烟, 烤烟, 植物生长调节剂, 基因型, 化学成分

Abstract:

Abstract：Different host pressure of Curvularia lunata on temperature，pH carbon source， nitrogen source and light condition were studied and determined the pathogenicity heterogeneity to the strains of maize Curvularia．The results showed that there were obvious differences of pathogenicity among the different strains，and the different strains could produce different types of disease spots on the same differential host．There were differences of disease spots in their size， shape．That explained why there was distinct phenomenon of pathogenicity heterogeneity among the strains．The colony features optium carbon，nitrogen source and pH of different pathogenic type of Curvularia lunata were difference．