Furthermore, by hierachical clustering, all 25 populations can be classified into 3 groups, in which those with pendulous inflorescence are in the same group and those with upright inflorescences are in the other two groups.

• 3)聚类分析表明，不同野生鸭茅种源可划分为3类，其中花序下垂种源聚于一类；而花序直立的种源分居另两类。