Dissertation Research: Evolution in Lopezieae (Onagraceae)

这项研究将利用涉及叶绿体和核糖体DNA的分子技术来研究罗布麻属(Onagraceae)内的系统发育关系。将特别强调(1)属内形态不同部分的关系，(2)分子进化的节奏、方式和模式，(3)形态和分子进化速率的一致性，(4)Pelozia组染色体数目变化的起源，以及(5)广泛分布的和当地特有物种内部和之间的比较遗传变异。这项研究将结合实地和实验室工作，并将有助于澄清分子研究与基于形态学、细胞学、解剖学和生物化学的系统发育和分类学研究之间的关系。

The study will investigate phylogenetic relationships within the genus Lopezia (Onagraceae) using molecular techniques involving chloroplast and ribosomal DNA. Particular emphasis will be on (1) the relationships of the morphologically divergent sections within the genus, (2) the tempo, mode, and pattern of molecular evolution, (3) the congruence of rates of morphological and molecular evolution, (4) the origins of chromosome number changes in section Pelozia, and (5) the comparative genetic variation within and among widespread and locally endemic species. The study will integrate field and laboratory work, and will help clarify the relationships between molecular studies and phylogenetic and taxonomic studies based on morphology, cytology, anatomy, and biochemistry.