Comparison of Seed Transmission and Survival of <i>Xanthomonas axonopodis</i> pv. <i>phaseoli</i> and <i>Xanthomonas fuscans</i> subsp. <i>fuscans</i> in Common Bean Seeds

Fig. 1. Greenhouse emergence, disease incidence, and incidence of symptomless infection after inoculation of Phaseolus vulgaris (cv. ‘Derby’) snap bean seeds with five strains of Xanthomonas axonopodis pv. phaseoli (blue bars) and five strains of Xanthomonas fuscans subsp. fuscans (red bars). Individual strains are arranged in the same order as in the legend. Emergence of noninoculated control seeds is shown by the black bar. There were no symptoms or pathogen detection in seedlings from noninoculated seeds. Values are based on two experiments, each with three replications of 25 seeds for each strain. Emergence = 100 × number of seedlings emerged / number of seeds planted; disease incidence = 100 × number of seedlings with visual symptoms / number of seedlings emerged; symptomless infection = 100 × number of symptomless seedlings from which pathogen was isolated / number of seedlings emerged. Symptomless infection did not differ significantly among strains or species. Mean separation was conducted by Tukey’s test (P = 0.05).

Image from Plant Health Progress article:
Comparison of Seed Transmission and Survival of Xanthomonas axonopodis pv. phaseoli and Xanthomonas fuscans subsp. fuscans in Common Bean Seeds