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Table 1 Analysis of variance for the effect of mating type, isolate, population and fungicide concentrations on the pathogenicity and fungicide tolerance of Alternaria alternata as measured by lesion size at 5th days post inoculation on detached potato leaves and the relative growth rate (RGR) of the isolates in the presence of difenoconazole or mancozeb at three concentrations to the absence of the fungicides

From: Cross-resistance of the pathogenic fungus Alternaria alternata to fungicides with different modes of action

  DF SS MS F Pr > F
Lesion area
 Mating type 1 23.19 23.19 7.61 0.006
 Population 6 124.54 20.76 6.81 < 0.0001
 Isolate (population) 223 2333.46 10.46 3.43 < 0.0001
 Error 606 1846.60 3.05   
Mancozeb tolerance
 Mating type 1 0.001 0.001 0.11 0.74
 Population 6 0.64 0.11 9.13 < 0.001
 Isolate (population) 194 12.52 0.07 5.54 < 0.001
 Concentration 2 1.51 0.75 64.77 < 0.001
 Error 1366 15.03 0.01   
Difenoconazole tolerance
 Mating type 1 2.52 × 10−5 2.52 × 10−5 0.00 0.96
 Population 6 0.53 0.09 8.07 < 0.0001
 Isolate (population) 187 5.97 0.03 2.94 < 0.0001
 Concentration 2 1.27 0.64 58.64 < 0.0001
 Error 1445 15.90 0.01