Figure 4

Pigment production in beech (b) and sugar maple (sm) by Trametes versicolor (average of three strains) at various moisture content values in eight weeks of incubation: ezl – external zone lines; ep – external pigmentation; izl – internal zone lines; ip – internal pigmentation. Error bars represent one standard deviation of five replicates per set. Different letters represent significant differences at α = 0.05 within each category.