Tomato (Solanum lycopersicum L.) is one of the most important vegetable crop belongs to family Solanaceae. The production quality of tomato affected by array of biotic and abiotic stresses. Of these, biotic factors especially viruses are major constraint in tomato production. Among viruses infecting tomato, Tomato leaf curl virus (ToLCV), Tomato spotted wilt virus (TSWV), Cucumber mosaic virus (CMV), Tomato mosaic virus (ToMV), and Tobacco mosaic virus (TMV) presently known to contribute consistently to yield losses of tomato crop. After ToLCV and TSWV, CMV is severely affecting the tomato and cause fern leaf or shoe string disease. CMV infecting different crops have been classified into two subgroups (I and II) based on biological and serological properties as well as on the basis of CP sequence homology. | Molecular characterization of RNA3 of CMV infecting tomato from Karnataka India