Systematics of the Determinate, One-flowered Genera of the Woody Bamboos (Poaceae: Bambusoideae: Bambuseae)

克拉克DEB-9806877真正的竹子是一组多样化的草本植物，分布在世界各地，包括至少1,200种木本和草本(非木本)成员。竹子多样性的主体是木本竹类，其中包括1100种热带和温带森林的特征成分。由于其结构的复杂性和不开花的生长间隔较长(某些情况下为40、60或80年或更长)，与其他草本植物相比，木质竹子仍未得到充分的研究。分子数据为木本竹子之间的进化关系提供了一些线索，但相对于其他草本植物，突变速度明显较慢，因此无法对这一类群进行更详细的分析。现有的竹子解剖和整个植物结构的数据提供了与分子数据相冲突的木本竹子祖先的迹象。这项研究的主要目的是通过进行详细的结构分析来检验确定的一花木质竹子中的这种冲突，以获得更好的进化关系估计。作为这项研究的一部分，将完成对Chusquea属最原始成员的分类研究，Chusquea属是这一木质竹子子集中最多样化的属。本项目的研究结果将为更广泛的演化研究和木本竹类的重新分类奠定基础。

Clark DEB-9806877 The true bamboos are a diverse group of grasses with worldwide distribution, including at least 1,200 species of both woody and herbaceous (non-woody) members. The bulk of bamboo diversity is found among the woody bamboos, which includes 1,100 species occurring as characteristic elements of both tropical and temperate forests. Due to their structural complexity and long intervals of growth without flowering (40, 60, or 80 or more years in some cases), the woody bamboos remain understudied compared to other grasses. Molecular data have provided some clues to evolutionary relationships among woody bamboos, but an apparently slower rate of mutation relative to other grasses has prevented more detailed analyses of this group. Available data for anatomy and whole plant structure of bamboos provide indications of ancestry among woody bamboos that conflict with those derived from molecular data. The principal objective of this research is to examine this conflict in the determinate, one-flowered woody bamboos by conducting detailed structural analyses to obtain a better estimate of evolutionary relationships. As part of this research, a taxonomic study of the most primitive members of Chusquea, the most diverse genus of this subset of woody bamboos, will be completed. The results of this project will provide the foundation for a broader evolutionary study and reclassification of the woody bamboos.