Persistent Link:
http://hdl.handle.net/10150/186416
Title:
Phylogenetic systematics of Gilia section Giliandra.
Author:
Porter, James Mark.
Issue Date:
1993
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Nuclear ribosomal internal transcribed spacer (ITS) DNA sequences are used to (1) estimate the phylogeny of thirty-six members of Polemoniaceae and (2) estimate the phylogeny of twenty-five populations, representing fifteen named species of Gilia section Giliandra. Analyses evaluating robustness estimations suggest that the earliest branching events are not resolvable using ITS sequences. Evidence is presented to suggest that the genus Gilia, as currently interpreted, is polyphyletic, comprised of at least three independent lineages. Species currently included in Gilia sect. Giliandra represent a monophyletic lineage, independent of the "true Gilias," but sharing common ancestry with G. latifolia. The evolution of reproductive systems is evaluated, using a phylogeny of the fifteen diploid species of Giliandra, derived from a combined sequences and morphological data. Although P/O differs significantly between autogamous and xenogamous classes of species, there is no major changes in P/O associated with the transition from xenogamy to autogamy relative to changes in P/O within xenogamous and autogamous lineages. There is a major decrease in pollen production associated with this transition. It is also shown that changes in pollen and ovule production are uncorrelated.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Dissertations, Academic.; Molecular biology.; Botany.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Ecology and Evolutionary Biology; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Donoghue, Michael J.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titlePhylogenetic systematics of Gilia section Giliandra.en_US
dc.creatorPorter, James Mark.en_US
dc.contributor.authorPorter, James Mark.en_US
dc.date.issued1993en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractNuclear ribosomal internal transcribed spacer (ITS) DNA sequences are used to (1) estimate the phylogeny of thirty-six members of Polemoniaceae and (2) estimate the phylogeny of twenty-five populations, representing fifteen named species of Gilia section Giliandra. Analyses evaluating robustness estimations suggest that the earliest branching events are not resolvable using ITS sequences. Evidence is presented to suggest that the genus Gilia, as currently interpreted, is polyphyletic, comprised of at least three independent lineages. Species currently included in Gilia sect. Giliandra represent a monophyletic lineage, independent of the "true Gilias," but sharing common ancestry with G. latifolia. The evolution of reproductive systems is evaluated, using a phylogeny of the fifteen diploid species of Giliandra, derived from a combined sequences and morphological data. Although P/O differs significantly between autogamous and xenogamous classes of species, there is no major changes in P/O associated with the transition from xenogamy to autogamy relative to changes in P/O within xenogamous and autogamous lineages. There is a major decrease in pollen production associated with this transition. It is also shown that changes in pollen and ovule production are uncorrelated.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectDissertations, Academic.en_US
dc.subjectMolecular biology.en_US
dc.subjectBotany.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineEcology and Evolutionary Biologyen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairDonoghue, Michael J.en_US
dc.contributor.committeememberMcDade, Lucinda A.en_US
dc.contributor.committeememberRobichaux, Robert H.en_US
dc.contributor.committeememberHeed, William B.en_US
dc.identifier.proquest9408490en_US
dc.identifier.oclc720657589en_US
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