The similarity coefficient of S. bicolor and S. sudanense were 55% to 95% and 52% to 84%, respectively.

• 2)高粱之间的相似系数从55%25到95%25，苏丹草之间的相似系数从52%25到84%25，因此选择的品种之间的多态性高，具有代表意义。