Figure 1.
Yield and quality of DNA extracted from wheat flour and maize stem residues. (A) Lane 1–5: healthy wheat kernels (five identical samples), lane 6: 25 ng λ-DNA. (B) Lane 1–6: infected wheat kernels. (C) Lane 1–5: healthy maize stem residues, lane 6: 25 ng λ-DNA. (D) Lane 1–5: infected maize stem residues, lane 6: 25 ng λ-DNA. Four microliters (from a total volume of 200 μL) of DNA extracted from 1 g of wheat flour or 500 mg of ground maize debris according to a modified CTAB protocol (see Material and Methods) were loaded on a 0.8% agarose gel and separated at 4 V/cm for 60 min.