Dissertation Research: Systematics and Evolution of Calandrinia Subgenus Hirsutae (Portulacaceae)

论文研究：马齿苋科Calandrinia亚属的系统学和进化

• 批准号: 8815348
• 负责人: Peter Hoch
• 金额: $ 1.17万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-11-01 至 1991-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8815348&HistoricalAwards=false
• 关键词: Dissertation; Research; Systematics; Evolution; Calandrinia

Graduate student Donna Ford, working under the supervision of Dr. Peter Raven, will conduct a taxonomic study of 20 or so species of annual plants of the genus Calandrinia of the purslane family Portulacaceae in Chile. Data will be obtained from new field collections made in Chile and from herbarium collections, with additional greenhouse and laboratory study of morphology, anatomy, chromosome numbers, pollen, and flavonoids. The distribution of character variation within and among populations of these plants will be examined, considering the roles of biogeography, ecology, and reproductive biology. Computer programs for deriving evolutionary patterns will be used to determine species relationships and to test hypotheses about modes of speciation and routes of migration. This project will provide valuable knowledge about the systematics and population biology of semi-arid zone plants and contribute information useful for the biotic inventory of South American plant resources.

研究生唐娜福特，在监督下工作 彼得·瑞文博士的研究员，将对20个左右的 马齿苋属的一个一年生植物种 产于智利的马齿苋科。 数据将从新的 智利的野外采集和植物标本馆的采集， 通过附加的温室和实验室形态学研究， 解剖学、染色体数目、花粉和类黄酮。 的 居群内和居群间性状变异的分布 这些工厂将被审查，考虑到的作用， 地理学、生态学和生殖生物学。 计算机 用于推导进化模式的程序将用于 确定物种关系，并测试关于 物种形成模式和迁移路线。 该项目将 提供有关系统学和种群的宝贵知识 半干旱区植物生物学和提供信息 对南美洲植物的生物目录有用 资源