Systematics of the Lemnaceae (duckweeds): Inferences from micromolecular and morphological data
Systematics of the Lemnaceae (duckweeds): Inferences from micromolecular and morphological data
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DOI：
10.1007/bf00989203
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发表时间：
1997-01-01
影响因子：
1.9
通讯作者：
Crawford, DJ
中科院分区：
文献类型：
--
作者：
Les, DH;Landolt, E;Crawford, DJ
浮萍家族的小型植物很难系统地研究，因为它们对水生生境的适应伴随着减少和特征状态的损失。类黄酮的系统发育分析和解剖形态数据表明，该科的进化是从复杂的祖先到亚科的简化种以线性方式进行的。狼毒亚科。然而，字符减少和丢失的高收敛概率使这一结论成为试探性的。根据综合数据绘制的分支图只需要稍微增加一点长度就可以将所有四个属都分解为单系。这些研究表明，需要更合适的数据来评估浮萍关系的假说。
Diminutive plants of the duckweed family have been difficult to study systematically because of reduction and character state losses that have accompanied their adaptation to aquatic habitats. Phylogenetic analysis of flavonoid and anatomical-morphological data indicate that evolution in the family has proceeded in a linear manner from complex ancestors to reduced species of subfam. Wolffioideae. The high probability of convergence for character reduction and loss, however, renders this conclusion tentative. Cladograms from combined data require only a slight increase in length to resolve all four genera as monophyletic. These studies indicate the need for more suitable data to evaluate hypotheses of duckweed relationships.