Dissertation Research: Systematics of Dombeya and the Dombeyoideae (Malvaceae s.l.)

论文研究：冬贝亚属和冬贝亚科 (Malvaceae s.l.) 的系统学

• 批准号: 0709969
• 负责人: Melissa Luckow
• 金额: --
• 依托单位: Cornell Univ - State: AWDS MADE PRIOR MAY 2010
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0709969&HistoricalAwards=false
• 关键词: Dissertation; Research; Systematics; Dombeya; Dombeyoideae

The plant genus Dombeya, of the Chocolate Family, is a striking example of the megadiversity of Madagascar, with 180 of its 210 species found only on this unique island. Although the genus is ubiquitous throughout Madagascar, most species of Dombeya are poorly understood and have been taxonomically neglected. This project aims to ameliorate this neglect by accomplishing two objectives: 1) complete a molecular phylogeny, a hypothesis of evolutionary relationships based on the study of DNA, for the entire genus, and 2) produce a taxonomic revision of section Astrapaea, a well-defined group within Dombeya.In developing countries, like Madagascar, widespread poverty compels unsustainable land use making immediate conservation action imperative. Yet, successful conservation and biodiversity management efforts require a sound taxonomic foundation, which is often lacking for tropical taxa. This study of section Astrapaea begins taxonomic work on Dombeya and the genus-wide phylogeny creates a framework for future taxonomic revision of the remainder of this dauntingly large genus, a significant goal considering Dombeya makes up 2% of the Malagasy flora. The project's concurrent creation of an online database of the Dombeya of Madagascar ensures dissemination of results to those most in need of them: researchers working on the ground in Madagascar.

巧克力家族的Dombeya植物属是马达加斯加巨人的一个醒目的例子，其210种仅在这个独特的岛屿上才发现的210种物种中有180种。 尽管该属在整个马达加斯加都无处不在，但多贝的大多数物种都被理解不足，并且在分类学上被忽略了。 该项目旨在通过实现两个目标来改善这种忽视：1）完成分子系统发育，基于DNA的研究的进化关系的假设，整个属以及2）进行分类，对Astrapaea节的分类学修订（在Dombeya中有明确定义的群体中的一个定义的群体。然而，成功的保护和生物多样性管理工作需要一个合理的分类基础，这通常缺乏热带分类单元。 这项对Astrapaea节的研究开始了对Dombeya的分类工作，整个系统发育局为将来的分类学修订创造了框架，以对这一艰巨的大属的其余部分进行修订，考虑到Dombeya占马加加斯加斯流群的2％的重大目标。 该项目同时创建了马达加斯加Dombeya的在线数据库，可确保将结果传播给最需要的人：在马达加斯加的地面上工作的研究人员。