[Phytopathogenic viruses and their strains found in the Asian territory of Russia].

More than 50 strains of 42 species representing 16 genera and 7 families of plant viruses have been identified in the Asian territory of Russia mainly in the South of Far East and Siberia. The viruses were united into the genera according to the data on morphology of virions and virus intracellular inclusions, the range of host-plants as well as properties of virus in infectious plant sap, physico-chemical and antigenic properties of capsid proteins. Taking into account significant differences of plant virus strains as to biological properties there are reasonable proposition to include a strain as an independent taxonomic unit into the present day classification of plant viruses.