摘要
试验以10个抗性不同的玉米自交系为材料,研究了玉米丝黑穗病不同接种浓度与田间发病率的关系。结果表明,随着病原菌接种浓度增加,玉米自交系田间发病率呈逐步增高的趋势,线性方程为y=2.3364x+19.443,相关系数为0.924。接种浓度在0.05%、0.1%、0.3%和0.5%时,田间发病率差异没有达到极显著水平,与1%接种浓度发病率差异极显著。
Relationship between different contents of head smut bacterium and incidences in field was analyzed in this paper. The materials were 10 different resistant inbred lines. The result showed that the linear equation was y=2.336 4x＋19.443, and coefficient index was 0.924. The incidences of inbred lines in field were growing with contents of head smut bacterium increasing. The differences of incidences in field were not at 0.05 probability level when contents of head smut bacterium were at 0.05%, 0.1%, 0.3% and 0.5%, but that at 1% probability level was not.
出处
《玉米科学》
CAS
CSCD
北大核心
2008年第1期119-121,共3页
Journal of Maize Sciences
基金
黑龙江省青年学术骨干教师支持计划项目(115/G009)
关键词
玉米
丝黑穗病
接种浓度
发病率
Maize
Head smut
Contents of bacterium
Incidence
