Jens G. Rohwer, Jan Zinser, Pedro Luís Rodrigues de Moraes, Dimitrij Trofimov
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引用次数: 0
摘要
根据核 ITS 区域和叶绿体 psbA-trnH spacer 的序列,并辅以对气孔形态的 SEM 研究,研究了古巴 Ocotea 物种的亲缘关系。具有两性花的物种都是大安的列斯群岛或古巴特有的物种,它们(至少)在系统发育上形成了两个不同的类群。Ocotea bucheri、O. libanensis、O. moaensis、O. reticularis 和一个未被描述的物种(它们都是古巴东部的特有种)组成了 Damburneya 属的姊妹群。其余物种形成两个支系,嵌套在 Praelicaria 支系中。目前还不能确定这两个支系是否为姊妹支系。这两个广泛分布的雌雄异株物种与来自新热带地区其他地方的同种材料具有预期的亲缘关系。
Affinities of the Ocotea (Lauraceae) species from Cuba
The affinities of the Ocotea species from Cuba are examined based on sequences of the nuclear ITS region and the chloroplast psbA-trnH spacer, supplemented by SEM studies on stomatal morphology. The species with bisexual flowers, all of them endemic either to the Greater Antilles or Cuba only, form (at least) two phylogenetically distinct groups. Ocotea bucheri, O. libanensis, O. moaensis, O. reticularis, and an undescribed species, all of them endemics of Eastern Cuba, form the sister group to the genus Damburneya. The remaining species form two clades nested in the Praelicaria clade. It remains uncertain if these two clades are sister to each other or not. The two widespread dioecious species show the expected affinities to conspecific material from other parts of the Neotropics.
期刊介绍:
Feddes Repertorium - Journal of Botanical Taxonomy and Geobotany is one of the world"s leading publications in theory and practice. Original research papers and reviews cover all groups of the plant world, including extant and fossil. Theory and principles of taxonomy, nomenclature, techniques and methodology, on evolution and phylogeny and descriptions of new taxa are considered as well. The reader will also find information on the history of flora and vegetation. All papers are internationally refereed by experts in their respective fields.