【摘要】 1963—1965年间,自全国征集34个大白菜品种材料(包括异地同种6个)在新疆石河子地区对TpMV进行了抵抗能力的试验。据1964、1965两年观察结果未发现免疫品种,但不同品种对TpMV的抵抗性不同。在34个品种材料中,属于抗病的品种1个,高度感病的6～7个,其余大部属耐病或感病。大白菜抵抗TpMV能力随品种本身遗传基因的变异,各年气候环境的变化以及优势毒源种群的变异而变动。利用抗、耐类型品种,结合搞好栽培管理和防蚜措施,可以获得较好的防病效果。由于未见免疫品种,因而单纯利用品种防病将是困难的。试验证明在大白菜各生育期均可发病,随着大白菜的生长发育,发病呈上升趋势,因此在结球期前应加强防除虫媒传病及栽培管理。更多还原

【Abstract】 Samples of 34 Chinese cabbage cultivars collected from 11 provinces,cities and autonomous regions were tested for their resistance toTpMV.No immune cultivar was found,but difference in varietal resis-tance to TpMV was distinct·Among them only 1 collection was resistant,6～7 collections highly susceptible,and others intermediate.Acordingly 5 types were grouped,namely resistant,tolerent,sus-ceptible and highly susceptible as well as unfixed.It has been notedthat the environment and strains of the TpMV influenced the expressionof Chinese cabbage resistance.In addition to the use of resistant or tolerent cultivars suitablemeasures of cultivation as well as aphids control are needed in produc-tion of healthy crops.更多还原