摘要
连续2年对广西388个玉米农家品种进行田间纹枯病抗病性鉴定。接种鉴定方法:以纹枯病大麦粒培养菌物在玉米拔节期进行田间接种,采用国际玉米小麦改良中心(C IMM YT)的病害分级评定方法进行鉴定。结果表明,农家品种间的抗感性存在差异;同一品种在同一年度内病害的表现春种和秋种也存在明显的差异。在388个材料中没有发现免疫和高抗的品种,其中抗病品种占所鉴定总数的42.8%,中抗水平占39.2%,感病占11.3%,高感占6.7%。
The resistance identification of sheath blight for 388 traditional varieties of maize was carried out in the field for two years in Guangxi. The inoculation identification method is as fellows： the sheath blight cultivated in barley-medium was inoculated to maize in the field during the elongation stage, and was identified by the disease grading standard of CIMMYT. The results showed that the resistance of disease affection among these traditional varieties was different, and the disease of each variety was also obviously different between spring planting and autumn planting in a year. The immune and high resistant varieties were not found, the percentage of disease-resistant varieties was 42.8%, moderate resistant varieties was 39.20%, disease susceptible varieties was 11.3% and highly susceptible varieties was 6.7 %.
出处
《广西农业科学》
CSCD
2005年第5期452-453,共2页
Guangxi Agricultural Sciences
基金
广西科学基金项目(合同编号:桂科青0339028)
关键词
广西
玉米
农家品种
纹枯病
抗病性鉴定
Guangxi
maize
traditional variety
sheath blight
disease-resistant identification
