grapevine yellow speckle viroid 1 grapevine yellow speckle viroid 1 grapevine yellow speckle viroid 1 is a type of viroid that infects grapevine. grapevine yellow speckle viroid 1 virus classification (unranked): virus realm: incertae sedis kingdom: incertae sedis phylum: incertae sedis class: incertae sedis order: incertae sedis family: pospiviroidae genus: apscaviroid species: grapevine yellow speckle viroid 1