基部被子植物
- 网络basal angiosperms
基部被子植物-
近年来，基于DNA序列证据的分子系统发育分析表明，被子植物可分为基部被子植物，单子叶植物（monocots）和真双子叶植物。
In recent years , molecular phylogenetic analysis based on multiple genes showed that angiosperms could be grouped into basal angiosperms , monocots and eudicots .
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在基部被子植物中，各个类群的共同祖先具有原始的管状分子形态，为管胞类型，这说明了基部被子植物各个大的类群中，导管是独立起源，各自独立进化的。
In basal angiosperms , the common ancestor of various groups bear primitive tracheary elements as tracheid type , so the vessel in different branches were not unitary origin and evolved independently .