大白菜软腐病苗期抗性及其与成株期抗性的关系  

Relationship of Resistance to Soft Rot (Erwinia carotovora )of Seedling and Adult Plants in Chinese Cabbage

作　　者：张学君[1] 李润双 凌宏通 吴蔼民[1] 王金生[1] 张斌[1] 丘玉秀 宋连玖 王玉龙[1] 

机构地区：[1]南京农业大学植保系,天津市蔬菜研究所

出　　处：《华北农学报》1995年第3期80-83,共4页Acta Agriculturae Boreali-Sinica

摘　　要：对６６个大白菜品种苗期抗性的测定结果表明，不同品种对细菌根系侵入和潜伏侵染的抗性存在显著差别；同一品种幼苗对侵入侵染的抗性与对潜伏侵染的抗性间没有相关性。幼苗期的组织含菌量与成株的田间软腐病发病程度有一定的相关性。并初步建立了大白菜对软腐病苗期抗性的鉴定方法。A preliminary method for identification of seedling resistance of Chinese cabbage to soft rot (Erwinia carotovora) was established 66 varieties were tested according to the method. A significant variation of resistance both to root invasion and to latent infection were existed among different varieties, with bacterial population in root tissues from 0 (90009 et al. ) to 2. 8 × 105CFU/g. fw(90008), and disease index from 24. 3 (90280)to 100 (90003 and 90272) when the root was induced disease. No correlation was found between resistance to root invasion and to latent infection. But in field test the occurrence of disease of adult plants was correlated with the bacterial population in seedling tissues.

关 键 词：大白菜 软腐病 苗期 抗性 

分 类 号：S436.341.1[农业科学—农业昆虫与害虫防治]