Serological relationships between Robinia mosiac, clover blotch and peanut stunt viruses

Based on the results of agar gel double immunodiffusion tests with broad spectrum rabbit antisera and narrow spectrum mouse immune ascitic fluids and formalin-fixed purified viruses, a close relationship was established between 3 members of the Cucumovirus group namely Robinia mosaic virus (RoMV), clover blotch virus (CBV) and peanut stunt virus (PSV). The relationship of these 3 viruses to cucumber mosiac virus proved to be more distant. The results also suggested that RoMV and CBV could represent distinct strains of PSV.