The Plant Pathology Journal

Fig. 2.

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Fig. 2. Infection efficiency and virulence of six Acidovorax citrulli isolates through wounding in roots. The watermelon seedlings were pulled out to injure the roots on the fifth day after sowing and their roots were cut by scissors. After they were re-planted, each bacterial suspension (106 cfu/ml) or 10 mM MgCl2 as a mock treatment was poured into soil near seedlings. (A) Watermelon seedlings showing symptoms at 2 days after inoculation (dai). In photos, left and right pots represent non-cut and cut groups, respectively. The arrows indicate symptomatic watermelon. (B) The disease severity by bacterial isolates at 2 dai that was scored according to disease index scale in . Bars represent standard error (n = 6). (C) The bacterial concentration in non-cut- or cut- roots of watermelon seedlings at 2 dai. Y-axis indicate the average of bacterial cell numbers per seedling (Log10 cfu/root). Bars represent standard error (n = 3) and the letters on top of error bars show results from Duncan’s multiple range test (P < 0.05).
Plant Pathol. J. 2020;36:29-42
© 2020 Plant Pathol. J.