【摘要】 1984～1988年以87个不结球白菜自(近)交系为原始材料,进行了芜菁花叶病毒(TuMV)抗性鉴定,并选留无症或轻症单株进行了4轮系谱选择.试验结果表明,未经筛选的原始材料均为高感,在高感群体中选择无症或轻症单株进行系谱选择后,抗病性逐渐提高,选择效应随品种和世代而异。经4轮系谱选择后获得15个抗芜菁花叶病毒的株系,作为抗源加以保存和有效利用。更多还原

【Abstract】 Screening for resistant sources to turnip mosaic virus (TuMV) in Brassica campestrisssp.ehinensis Makino were conducted during the period of 1984～1988.Eighty sevenselfed or inbred lines were tested for resistance to TuMV by mechanical inoculation in aninsect free greenhouse.Seedlings showing no or slight symptom were selfed for pedigreeselection.The original 87 selfed or inbred lines were highly susceptible (HS) to TuMV.After pedigree selection of individuals showing no or slight symptom from HS popula-tions,the resistancc of lines was improved gradually.Gains of selection differed withcultivars and generations.After 4 cycles of pedigree selection 15 lines resistant to TuMVwere obtained and preserved as sources of resistance.更多还原