Contour-clamped homogeneous electric field (CHEF) gel electrophoresis was used to compare the electrophoretic karyotype of three Mortierella species and two mutant strains.

• 利用等强度均一电场（Contour-clamped Homogeneous Electric Field， CHEF）凝胶电泳技术比较了三种被孢霉菌株及两株诱变菌株的电泳核型。