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2003年秋至2005年夏连续2年对广西223份玉米自交系进行多年多重复的田间纹枯病抗病性鉴定。接种鉴定方法:将玉米纹枯病分离菌在大麦粒上扩繁,于玉米拔节期进行田间接种,采用国际玉米小麦改良中心(CIMMYT)的病害分级评定方法进行鉴定。结果表明:玉米自交系间的抗感性存在差异,同一自交系在同年度内春播与秋播鉴定中抗病性表现存在明显差异。在223份材料中未发现免疫类型,高抗自交系占所鉴定总数的1·3%、抗病的占14·4%、中抗水平占6·3%、感病占2·2%、高感占75·8%。
In the autumn of 2003 to the summer of 2005, the resistance of 97 maize inbred lines in Guangxi for many years to field sheath blight were identified for two consecutive years. Inoculation Identification Method: The corn sheath blight isolates expanded on barley grains, inoculated at the jointing stage of corn and identified by CIMMYT disease grading method. The results showed that the anti-susceptibility of maize inbred lines was different, and the same inbred lines in spring and sowing in the same year in the identification of disease resistance there are significant differences. The type of immunity was not found in 223 materials, high resistant inbred lines accounted for 1.3% of the total identified, 14.4% resistant to disease, 6.3% moderate resistant, and 2.2% , High sense of 75.8%.