不同生育期、氮肥水平和品种对烟草赤星病抗性组分的影响  

Effects of Different Growth Stages, Levels of Nitrogenous Fertilizer and Varieties on the Main Components of Resistance to Tobacco Brown Spot

作　　者：马贵龙[1] 高洁[1] 张佳环[1] 杨信东[1] 华致甫[1] 

机构地区：[1]吉林农业大学农学院,吉林长春130118

出　　处：《吉林农业大学学报》2002年第2期97-99,共3页Journal of Jilin Agricultural University

基　　金：吉林省科委和吉林省烟草公司资助项目

摘　　要：研究了不同生育期、氮肥水平和品种对烟草赤星病的主要抗性组分侵染几率、潜育期和病斑产孢量的影响。结果表明 :烟草生育期对赤星病的潜育期影响较小 ,但对侵染几率和单斑产孢量有显著影响。随着烟草的生长发育 ,侵染几率明显升高 ,单斑产孢量显著增加。氮肥水平对潜育期无明显影响 ,但与侵染几率和病斑产孢量呈正相关。不同品种之间在潜育期上无明显差异 ,但在侵染几率和病斑产孢量上有较大差异。The effects of different growth stages of tobacco, levels of nitrogenous fertilizer and tobacco varieties on the main components of resistance to brown spot (infection frequency, incubation period and spore production capacity of per lesion) were studied in this experiment. The results showed that growth stages did not have significant effects on incubation period, while affected significantly on infection frequency and spore production capacity of per lesion. With the growth of tobacco, infection frequency and spore production capacity of per lesion increased. Levels of nitrogenous fertilizer did not take on significant effects on incubation period, but they were positively related with infection frequency and spore production capacity of per lesion. Different tobacco varieties did not result in much difference in their incubation periods, but the differences between infection frequencies and spore production capacities of per lesion were great.

关 键 词：生育期 氮肥水平 品种 烟草赤星病 抗性组分 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]