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3 甘蓝病原及抗病性鉴定在以前的研究基础上,对甘蓝病毒病的毒原种群进行了鉴定,明确了TuMV为我国的主要病毒,发病率最大,CMV的田间发病率在显著上升,华北地区CaMV有明显的加重趋势,TuMV与CMV或CaMV复合感染普遍存在。对TuMV的株系进行了分化,按中
3 cabbage pathogen and identification of disease resistance Based on the previous studies, identification of the virulent population of cabbage virus disease identified TuMV as the major virus in our country, the highest incidence of CMV in the field significantly increased the incidence of North China Regional CaMV significantly increased the trend, TuMV and CMV or CaMV complex infection prevalence. TuMV strains were differentiated, according to