Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 2 of 2
Full-Text Articles in Botany
A Systematic Study Of Trillium Subgenus Delostylis, Susan B. Farmer
A Systematic Study Of Trillium Subgenus Delostylis, Susan B. Farmer
Doctoral Dissertations
This study focused on the systematics of Trillium subg. Delostylis, an enigmatic group endemic to the southeastern United States. Phylogenetic analysis of DNA sequence data was used to examine the circumscription and phylogenetic placement of Delostylis. The results of the phylogenetic analysis of data from the ITS, matK, and psbA-trnH sequence data suggested that the circumscription of Delostylis be narrowed to consist of T. persistens, T. catesbaei, and T. pusillum sensu lato. A revised Delostylis was characterized by the presence of a style with three slender stigmatic branches in those plants whose flowers are either white-fading-to-pink …
Molecular Evolution Of Mads-Box Genes In Cotton (Gossypium L.), Wusheng Liu
Molecular Evolution Of Mads-Box Genes In Cotton (Gossypium L.), Wusheng Liu
Doctoral Dissertations
The purpose of this study was to examine the molecular evolution of floral developmental MADS-box genes in diploid and allotetraploid cotton (Gossypium, Malvaceae). We isolated and characterized both cDNA and genomic DNA sequences of four MADS-box genes, B-sister, APETALA3 (AP3), PISTILLATA (PI, two copies) and AGAMOUS (AG), in seven Gossypium species (2 A-genome species, 2 D-genome species, 1 C-genome species and 2 AD-genome species) as well as an outgroup species, Gossypioides kirkii. We then studied the expression patterns of each gene by reverse-transcriptase PCR (RT-PCR) in each flower part for different flower stages of G. …