ISHS Acta Horticulturae 66: I International Symposium on Small Fruit Diseases
THE OCCURRENCE OF THE BLACK RASPBERRY LATENT STRAIN OF TOBACCO STREAK VIRUS IN WILD AND CULTIVATED RUBUS SPECIES IN BRITISH COLUMBIA |
| Authors: | A.A. Brunt, R. Stace-Smith |
| Abstract:
A virus, subsequently identified as the black raspberry latent strain of tobacco streak virus (TSV/BR), was isolated from 162 of 470 (34.5%) apparently symptomless wild dewberry plants (Rubus ursinus) from scattered locations throughout S.W. British Columbia. The occurrence of the virus in dewberry in remote non-agricultural areas indicates that infection is endemic in western Canada and was present before the introduction of cultivated Rubus species. The virus was also prevalent in Loganberry and in five blackberry cvs, but it was not detected in red raspberry, thornless Loganberry, Himalayan blackberry or parsley-leaved blackberry. The virus had physico-chemical properties similar to those of other TSV strains, but it could be differentiated from some in indicator species. Isolates from dewberry, blackberry and Loganberry were serologically indistinguisable from each other and from TSV/BR, and were related but less closely to the type, bean red node and dahlia (U.K.) strains. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
