Skip to Main Content
Frequently Asked Questions
Submit an ETD
Global Search Box
Need Help?
Keyword Search
Participating Institutions
Advanced Search
School Logo
Files
File List
Dissertationfinalfinal.pdf (36.45 MB)
ETD Abstract Container
Abstract Header
Biosystematics of the Genus
Heuchera
(Saxifragaceae)
Author Info
Folk, Ryan Andrew
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1437151510
Abstract Details
Year and Degree
2015, Doctor of Philosophy, Ohio State University, Evolution, Ecology and Organismal Biology.
Abstract
The plant genus
Heuchera
(Saxifragaceae) consists of more than 40 species of plants largely specific to rock outcrops in montane regions, known for its difficult species delimitation attributable to hybridization and polyploidy. Presented herein are taxonomic and phylogenetic studies intended to clarify the evolution of this plant genus and to elucidate species boundaries in problematic species complexes. A study on whole-genus phylogenetic relationships using six nuclear DNA sequence loci and 39 morpological characters constitutes the first chapter. Following this is a study on species delimitation in the
Heuchera parviflora
complex using molecular and morphological data. Revisionary studies are afterwards presented which treat taxa occuring in Mexico (heretofore the most problematic of all
Heuchera
species), treated in two separate chapters to reflect two apparently unrelated circles of affinity among the Mexican taxa, and finally a study of southwestern U.S. species of section
Heuchera
which are also poorly known. This work is concluded with studies using new sequencing technologies to provide a genomic view of
Heuchera
: a new method for sequence capture in recently diverged complexes is followed by a phylogenomic study that improves upon the work presented in the first chapter.
Committee
John Freudenstein, V (Advisor)
Marymegan Daly (Committee Member)
Andrea Wolfe, D. (Committee Member)
Pages
592 p.
Subject Headings
Biology
;
Botany
;
Plant Biology
;
Plant Sciences
Keywords
Heuchera
;
Saxifragaceae
;
Saxifragales
;
species delimitation
;
sky island
;
hybridization
;
reticulation
;
gene flow
;
alpha taxonomy
;
revision
;
monograph
;
systematics
;
phylogenetics
;
phylogenomics
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Folk, R. A. (2015).
Biosystematics of the Genus
Heuchera
(Saxifragaceae)
[Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437151510
APA Style (7th edition)
Folk, Ryan.
Biosystematics of the Genus
Heuchera
(Saxifragaceae).
2015. Ohio State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1437151510.
MLA Style (8th edition)
Folk, Ryan. "Biosystematics of the Genus
Heuchera
(Saxifragaceae)." Doctoral dissertation, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437151510
Chicago Manual of Style (17th edition)
Abstract Footer
Document number:
osu1437151510
Download Count:
238
Copyright Info
© 2015, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.