Systematic Studies of Solanum section Basarthrum

龙葵科的系统研究

• 批准号: 8818335
• 负责人: Gregory Anderson
• 金额: $ 10.75万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1991-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818335&HistoricalAwards=false
• 关键词: Systematic; Studies; Solanum; section; Basarthrum

A two-part study of tropical plant species related to potatoes, emphasizing questions of phylogenetic relationship and processes of evolutionary change, will be conducted by Drs. Greg Anderson and Robert Jansen of the University of Connecticut. They will generate a large data set of characters pertaining to chloroplast DNA and nuclear ribosomal DNA. These and other data will be used to construct a tree or cladogram of putative genealogical relationships of Solanum section Basarthrum species. A second series of studies will provide data bearing on hypothesized mechanisms of evolutionary change, data from morphology, breeding systems, geographical distribution, and chromosome composition. These process-oriented studies should help in understanding how the phylogenetic patterns were created. The studies focus upon a group of approximately 25 species that are native to the high mountains of Latin America and are closely related to potatoes. The group also includes the "pepino dulce," an Andean species domesticated for its fruit. Taxonomic relationships of the pepino are unclear and its origin unknown; thus, the study will benefit crop improvement by locating sources of useful traits that can be incorporated into the cultivated varieties. In addition the study will help explain the origins of dioecious solanums, species with separate male (pollen) and female (ovule) plants, an otherwise unusual breeding system in the genus.

热带植物物种的两部分研究 马铃薯，强调系统发育关系的问题， 进化的变化过程，将由格雷格博士进行 康涅狄格大学的安德森和罗伯特詹森。 它们将生成一个大型字符数据集， 叶绿体DNA和核核糖体DNA。 这些和其他数据 将被用来构建一个树或分支图的推定 文章题目茄属茄组Basarthrum种的亲缘关系。 第二个系列的研究将提供数据， 进化变化的假设机制，数据来自 形态学、繁殖系统、地理分布，以及 染色体组成 这些面向过程的研究应 有助于理解系统发育模式是如何形成的。 这些研究集中在一组大约25种 原产于拉丁美洲的高山， 与马铃薯密切相关。 该集团还包括“pepino” 杜尔塞，”安第斯山脉的一个品种，因其果实而被驯化。 分类学 pepino的关系尚不清楚，其起源不明; 因此，该研究将有助于通过定位源来改善作物 一些有用的特性可以被整合到 品种 此外，这项研究将有助于解释 雌雄异株的茄属，种与单独的男性（花粉）和 雌性（胚珠）植物，一个不寻常的繁殖系统， 属。