Science in Developing Countries Program: The Systematics andEvolution of the Genus Coreopsis (Asteraceae) in South America

该项目将支持合作 丹尼尔博士的系统生物学研究 俄亥俄州州立大学的克劳福德博士说。 埃德温B。阿肯色州大学的史密斯 和大学的Aundio Sagastegui博士 秘鲁，奥雷戈德特鲁希略。 的 该项目将启动对 南美洲分类与进化 金鸡菊属Coreopsis （菊科）。 34个物种 从南美洲开始， 大多数发生在北方安第斯山脉， 秘鲁和所有分配给该节。 假蘑菇。 很少有人知道的 超过阿尔法水平的物种，大多数 主要在叶上描述的分类群 形态学 合作努力将 涉及以下方法：实地研究 以评估内部的形态变化， 在所描述的物种中， 收集来记录这种变化， 采集花蕾和种子 和干叶材料.测定 每个物种的染色体数目;使用 用酶电泳来评估基因 内部差异和内部分歧 物种;和使用形态学和 叶绿体DNA限制性位点变异 构建南半球的遗传假说 美国金鸡菊和所有金鸡菊。 该项目将提供深入了解 属的系统进化方面 金鸡菊和将允许协同 三者之间的关系要发展得很好-- 合格的调查员。 该项目将 提供资源和研究机会 秘鲁人目前无法获得 首席研究员，并将涉及 秘鲁学生。 由于这种类型的 研究还提供了快速交换 和传播知识， 将实现科学的目标， 发展中国家方案。

This project will support collaborative studies in systematic biology by Dr. Daniel J. Crawford of Ohio State University, Dr. Edwin B. Smith of the University of Arkansas and Dr. Aundio Sagastegui of the Universidad Antenor Orrego de Trujillo, Peru. The project will initiate studies of the systematics and evolution of South American representatives of the Genus Coreopsis (Asteraceae). Thirty four species are described from South America with the vast majority occurring in the northern Andes of Peru and all assigned to the sect. Pseudoagarista. Little is known about the species beyond the alpha-level, with most of the taxa described primarily on leaf morphology. The collaborative effort will involve the following methods: field studies to assess morphological variation within and among the described species, specimen collection to document this variation, gathering of floral buds and collecting seeds and dried leaf material; determination of chromosome numbers for each species; the use of enzyme electrophoresis to estimate genetic variation within and divergence among species; and the use of morphology and chloroplast DNA restriction site variation to construct phylogenic hypotheses for South American Coreopsis and for all of Coreopsis. The project will provide insight into systematic-evolutionary aspects of the genus Coreopsis and will allow a synergistic relationship to develop among the three well- qualified investigators. The project will present resources and research opportunities currently unavailable to the Peruvian principal investigator and will involve Peruvian students. Since this type of research also provides for the rapid exchange and dissemination of knowledge, the project will fulfill the goals of the Science in Developing Countries Program.