Transmission of Rose Rosette Virus by the Eriophyid Mite Phyllocoptes fructiphilus1

Abstract
Rose rosette virus was transmitted by the eriophid mite Phyllocoptes fructiphilus Koch, but not by the two-spotted spider mite, Tetranychus urticae Koch. The time necessary for the appearance of symptoms in rose plants infected by viruliferous eriophyid mites ranged from 30 to 146 days. Rosa eglanteria L.. R. suffulta Greene, R. woodsii Lindl., R. multiflora Thun., and R. rubrifolia VIII. were proved to be infected with rose rosette virus either by grafting or by mite transmission. R. canina L., R. gallica L., R. soulieana Crép., R. spinosissonia altaica (L.), Rehd., R. hugonis Hems!., and many interspecific hybrids including the hybrid tea, florabunda, and grandi flora complexes were observed apparently infected with rose rosette. Rose rosette evidently is a disease of rural or mountainous areas, regions where cultivated roses may be infected by mites wind-borne from infected wild rose.

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