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Scale of phenotypic categorization according to the reaction of melon leaves infected with Didymella bryoniae. Leaves were rated according to the following scales: 1 = 0% leaf area affected, 2 = 1–10% leaf area affected, 3 = 11–30% leaf area affected, 4 = 31–50% leaf area affected, and 5 = 51–100% leaf area affected.
