Presumption on phy I ogenetic reIationship between the dicoty I edons and the monocotyledons - the first stage for invest i gating the origin of the monocotyIedons-

双子叶植物与单子叶植物系统发育关系的推定——研究单子叶植物起源的第一阶段——

• 批准号: 20570095
• 负责人: TAMURA Minoru
• 金额: $ 3.08万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20570095/
• 关键词: 原始的被子植物; 単子葉植物; 分子系統樹

The results of presumption on the extant dicotyledons that are most closely related to the monocotyledons were not constant depending on the materials and methods used for the study. It was a group of Magnoliales and Laurales when we used a method of maximum parsimony with a material of Ceratophyllales. It was Piperales when we used maximum parsimony without Ceratophyllales. And, it was a group of Piperales, Magnoliales and Laurales when we used a method of maximum likelihood regardless of Ceratophyllales. However, the bootstrap values were low in all cases. Recently, it was often reported that it was a group of eudicots and Ceratophyllales. However, the present results did not support the relationship.

对现存双子叶植物与单子叶植物亲缘关系最近的推测结果并不恒定，这取决于研究所用的材料和方法。以角叶目为材料，采用最大简约法，将其划分为木兰目和樟目两个类群。当我们使用最大简约法而不使用Ceratophyllales时，它是Ceratophyllales。用最大似然法不考虑角叶目的情况下，将其分为紫叶目、木兰目和樟目。然而，在所有情况下，自举值都很低。近年来，该属常被报道为真双子叶植物和角叶藻目。然而，目前的结果并不支持这种关系。

项目成果

Is the sister group of the monocots really eudicots?

单子叶植物的姐妹群真的是双子叶植物吗？

• 发表时间: 2011
• 作者: Tamura;M.N.
• 通讯作者: M.N.