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eudicots 添加释义

英英释义

Eudicots

  • abstract: The Eudicots, Eudicotidae or Eudicotyledons are a monophyletic clade of flowering plants that had been called tricolpates or non-magnoliid dicots by previous authors. The botanical terms were introduced in 1991 by evolutionary botanist James A. Doyle and paleobotanist Carol L. Hotton to emphasize the later evolutionary divergence of tricolpate dicots from earlier, less specialized, dicots. The close relationships among flowering plants with tricolpate pollen grains was initially seen in morphological studies of shared derived characters. These plants have a distinct trait in their pollen grains of exhibiting three colpi or grooves paralleling the polar axis. Later molecular evidence confirmed the genetic basis for the evolutionary relationships among flowering plants with tricolpate pollen grains and dicotyledonous traits. The term means "true dicotyledons" as it contains the majority of plants that have been considered dicots and have characteristics of the dicots. The term "eudicots" has subsequently been

以上来源于: WordNet

双语例句

  • Several monophyletic clades of seed plants, namely eudicots, rosids, and asterids, were supported by molecular data with their united morphological synapomorphies.

    根据分子数据结合形态上近裔共性,若干分支单系性得到支持,这些分支包括真双子叶植物蔷薇分支分支等。

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  • One duplication occurred 200 million years ago, just before monocots and eudicots arose.

    一次加倍发生在2亿年前,即单子叶子叶植物出现之前

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  • The similarity of its heteropolar 3- or 6-aperturate pollen to the 3-aperturate pollen of Eudicots might result from convergent evolution.

    异极36花粉与真子叶植物3沟花粉的相似是趋同演化的结果

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