Relationships between a parsley virus, nasturtium ringspot virus and broad bean wilt virus*

Abstract
SUMMARY: A non‐persistent, aphid‐transmitted virus (PV3) found in parsley in Britain was cultured in Chenopodium quinoa. It was mechanically transmissible, relatively stable in vitro and had polyhedral particles approximately 30 nm in diameter.Virus particles occurred within the cells as crystals, scrolls and tubular structures. In purified preparations, virus particles were mostly aggregated, especially in the presence of salts.PV3, nasturtium ringspot virus and broad bean wilt virus were found to be closely related serologically.