基于分支系统学的原理和方法，对禾本科以礼草属进行了系统发育分析。
Based on the principles and methods of cladistics, the phylogeny in Kengyilia of Poaceae is analysed in the present paper.
然而，在进行系统发育分析时通常的序列联配方法有明显的局限性，即无法摆脱一级结构的束缚。
However, when carrying out systematic analysis the general multi-sequence alignment method obviously has its limitation, i. e. it cannot shake off its primary structure.
方法形态分类和系统发育分析相结合的方法。
Methods Combination of morphological classification and phylogenic analysis.
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