Strain changes in populations of tobacco mosaic virus from tomato crops |
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| Authors: | J. T. FLETCHER D. BUTLER |
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| Affiliation: | Agricultural Development and Advisory Service, Lawnswood, Leeds, LS16 5PY |
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| Abstract: | The incidence of tobacco mosaic virus (TMV) Strain 1 in tomato crops of TMV-susceptible cultivars increased from 12% in 1971 to 64% in 1974. This change coincided with the introduction of cross protection to reduce the effects of tomato mosaic. Of the isolates collected from nurseries where the technique was used in 1974, 94% were of Strain 1 compared with 39 % from the other nurseries. No new strains were found and all the isolates were tomato forms of TMV. |
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