摘要： 大白菜抗源“8407”是河北省农林科学院蔬菜研究所选育的高抗芜菁花叶病毒(TuMV)的抗源材料.1985年经国家专家组验收为国家大白菜抗源.1987年鉴定,“8407”对全国十个省市19个TuMV分离物中的17个表现免疫,两个有轻微症状,因此被确认为我国大白菜对TuMV垂直抗性最好的抗源材料.该材料是1978至1983年从青麻叶系统内蒙古长炮弹品种,经连续6代自交选育而成.在逐年自交的同时,进行了亲和指数和配合力的测定.1983年用“8407”抗源和另一自交系,育成高抗TuMV兼抗霜霉病和软腐病的多抗型“8361”新品种.

关键词: 大白菜, 抗源, 芜菁花叶病毒

Abstract: The resistant strain-8407 is a high resistant strain of Chinese cabbage (Brassica pekinensis Rupr,)to turnip mosaic virus (TuMV).This resi-stant strain was checked by Chinese experts on Chinese cabbage in 1985 and accepted as a national resistant strain, The identical result indicated that seventeen of nineteen separations from TuMV, which were collected from ten provinces and cities, were immune to the disease,other two showed some slight symptoms,Therefore the 8407 was acknowledged to be the best vertical resistant strain to TuMV, This resistant strain was bred from piemarker from 1978 to 1983，and the affinity index and coordination rate were determined,A poly-resistant strain-8361 u-as bred from the 8407 and another selfpollinated strain in 1983. This new strain was high resistant not only to TuMV, but also to downy mildew and soft rot,

Key words: Chinese cabbage, Resistant strains, TuMV