The paper summarizes the applications of DNA sequences (cpDNA, nrDNA and mtDNA) in bryophyte phylogenesis, and discusses the strategies of gene fragment selection.

• 本文综述了DNA序列（叶绿体基因组、核基因组和线粒体基因组）在苔藓分子系统学中的应用，探讨了基因片段的选择策略。