Identification of Virus Diseases of Tobacco in Hellongjiang Province and Changchun City
Abstract: ne hundred and twenty nine samples of virus infected tobacco leaves were collected from 11counties/cities of Heilongjiang Province and Changchun City during early June to late August,1991-1993.Viruses were identified by differential hosts,serological assays(ELISA or DIBA)and electronmicroscopy of ISEM.TMV,PVY,CMV,TRV,TSWV and TMV-Y were foundisolately or complicatedly.The most predominate virus was TMV,and the next one was PVY,their rates of occurence were 53.5%and 40.3%,respectively