Figure 4.

Variation of among four agroecological zones in the percent of aflatoxin-producing Aspergillus isolates producing quantities of AFB₁ in China. ND, none AFB₁ detected; 0–100, production of AFB₁ by isolates was 0–100 ng·mL⁻¹; 100–1000, producing of AFB₁ by isolates was 100–1000 ng·mL⁻¹; >1000, producing of AFB₁ by isolates was >1000 ng·mL⁻¹; a line not sharing a common letter is significantly different (p ≤ 0.05) according to Turkey’s HSD test on ranks of AFB₁ concentrations.