title: The identification of strains of tobacco mosaic virus from tomato crops in Southern Ontario.
mesh_terms: D005796:Genes; D006824:Hybridization, Genetic; D009864:Ontario; D010935:Plant Diseases; D012621:Seasons; D014027:Tobacco Mosaic Virus / Q000145:classification* / Q000254:growth & development / Q000302:isolation & purification / Q000472:pathogenicity