Abstract
A ringspot virus that occurs in raspberry was graft-transmitted to 5 strains of Fragaria vesca and to 11 commercial varieties of strawberry. Shock symptoms on F. vesca were similar to those of the strawberry viruses, mottle, and vein-banding, but were followed by mild chronic symptoms that were diagnostic. Most of the commercial varieties were killed by the virus but British Sovereign and Sparta appeared to be immune. The virus was transmitted through a large proportion of the seed from infected plants but not through the pollen.
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