Local Sources ofClavibacter michiganensisssp.michiganensisin the Development of Bacterial Canker on Tomatoes

Seed transmission, overwinter survival, and dispersal of Clavibacter michiganensis ssp. michiganensis on processing tomatoes (Lycopersicon esculentum) and spread of C. m. michiganensis on alternative hosts and nonhost plants were evaluated with rifampicin-resistant strains of C. m. michiganensis (Rif + C. m. michiganensis) and a selective medium. The bacterium was transmitted at a low rate from seed to transplants by sowing infested seed in the greenhouse and transplanting the seedlings to a production field (...)