Eighty-five strains of Pseudomonas solanacearum isolated from diseased tubers and soil samples from a 0.3-ha field near Hastings, Florida, were heterogeneous for antibiotic production and sensivity, pathogenicity, and carbohydrate utilization: All strains belonged to race 1, Biovar 1, Eight strains belonged to one of three groups: 1) weakly aggressive to potato cultivars Atlantic (susceptible) and Ontario (moderately resistant), 2) highly aggressive to both potato cultivars, and 3) highly aggressive to Atlantic but weakly pathogenic toward Ontario
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R. J. McLaughlin (1989) studied this question.