PRF: Cladistic Classification of Primitive Angiosperms

PRF：原始被子植物的分支分类

• 批准号: 8800188
• 负责人: Henry Loconte
• 金额: $ 5.28万
• 依托单位: Fellowships
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-15 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8800188&HistoricalAwards=false
• 关键词: PRF; Cladistic; Classification; Primitive; Angiosperms

The University of Arizona will be the site of a project designed as a cladistic analysis to resolve the phylogenetic systematics of Magnoliidae. Approximately 60 OTUs (operational taxonomic units) will be coded, including monophyletic entities of variable taxonomic rank. Over 100 characters will be defined from as complete an array of systematic evidence as possible, and missing data will be supplemented by empirical collection of new data. New characters will also be developed. Character polarization by outgroup comparison with published cladograms of seed plant phylogeny will facilitate the recognition of ancestral conditions in primitive angiosperms. Existing and newly developed parsimony packages will be utilized to develop resolved cladograms depicting monophyletic clades and concordant character evolution. The resulting phylogenetic classification will have high predictive value for subsequent analyses and tests of hypotheses. The research is being supported by a two-year postdoctoral research fellowship in environmental biology.

亚利桑那大学将作为一个分支分析项目的所在地，以解决木兰科的系统发育问题。将对大约60个OTU(操作分类单位)进行编码，包括不同分类等级的单系实体。将从尽可能完整的系统证据数组中定义100多个字符，并将通过经验收集新数据来补充缺失的数据。新的角色也将被开发出来。通过与已发表的种子植物系统发育分支图比较，通过外群的特征极化将有助于识别原始被子植物的祖先状况。现有的和新开发的简约包将被用来开发描绘单系支系和和谐特征进化的已分解的支系图。由此产生的系统发育分类将对随后的分析和假说测试具有很高的预测价值。这项研究得到了为期两年的环境生物学博士后研究奖学金的支持。