Dissertation Research: Biosystematic Analysis of the Pleopeltis macrocarpa Complex

论文研究：Pleopeltis macrocarpa 复合体的生物系统分析

• 批准号: 9122855
• 金额: $ 0.82万
• 依托单位: University of Kansas Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-01 至 1994-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122855&HistoricalAwards=false
• 关键词: Dissertation; Research; Biosystematic; Analysis; Pleopeltis

The Polypodiaceae is one of the largest families of homosporous ferns and in the New World is represented by the single tribe Polypodieae. About 90% of the species in the tribe occur in the neotropics where they are a conspicuous component of the epiphytic flora. Despite this concentration of species in the tropics, biosystematic studies within the tribe have focused only on the temperate zone species in the genus Polypodium. Graduate student Elisabeth Andrews, under the direction of faculty advisor Christopher Haufler, will apply analytical techniques that have proven successful in studies of Polypodium to a group of closely related tropical species. Morphological and molecular data will be combined in distinguishing species and in resolving phylogenetic or genealogical relationships within the Pleopeltis complex, a group of 15 simple-leaved species. Fieldwork in Jamaica and Costa Rica will provide plant material for cultivation, for chromosomal, isozymic (protein), and chloroplast DNA analyses. The anticipated research will complete the first biosystematic study of a group of epiphytic ferns, which integrates molecular and morphological data, and as such it may serve as a foundation for future studies within the predominantly epiphytic Polypodiaceae.

水龙骨科是同孢蕨科中最大的科之一，在新大陆以水龙骨族为代表。该部落约90%的物种出现在新热带地区，在那里它们是附生植物区系中的一个显著组成部分。尽管物种集中在热带，但部落内的生物系统学研究仅集中在水龙骨属的温带物种上。研究生伊丽莎白·安德鲁斯将在教师导师克里斯托弗·豪夫勒的指导下，将已被证明成功的分析技术应用于一组密切相关的热带物种。形态和分子数据将结合起来区分物种，并解决侧耳草属复合体内的系统发育或系谱关系。侧耳草属是由15个单叶物种组成的群体。牙买加和哥斯达黎加的田野工作将为种植提供植物材料，用于染色体、同工酶(蛋白质)和叶绿体DNA分析。这项预期的研究将完成对一组附生蕨类植物的首次生物系统学研究，该研究整合了分子和形态数据，因此可能成为以附生水龙骨科为主的未来研究的基础。