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Disease Index Scoring of A. brassicicola–Infected Plants.
Plants (21 d old) were inoculated as above. After 3 d, 20 to 24 leaves per genotype were assigned a disease index score. 1, necrosis confined to the area of the inoculation droplet; 2, some chlorosis around the necrotic spot; 3, spreading chlorosis and/or some necrosis beyond the inoculation droplet; 4, spreading necrosis.
