Evolutionary Genomics of Populus trichocarpa (Western Poplar)

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dc.contributor.authorBawa, Rajesh Kumaren
dc.contributor.committeechairHolliday, Jason A.en
dc.contributor.committeememberWu, Xiaoweien
dc.contributor.committeememberZhang, Liqingen
dc.contributor.committeememberMcGlothlin, Joel W.en
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.date.accessioned2019-02-07T07:00:34Zen
dc.date.available2019-02-07T07:00:34Zen
dc.date.issued2017-08-15en
dc.description.abstractForest trees are an important pool of biodiversity at the gene, individual and an ecosystem level. This variation is a result of complex environmental interactions, as well as neutral and selective forces acting on populations. Patterns of standing genetic variation are the result of adaption to past and contemporary climate change, but also historical demographic events, and disentangling the role of these forces is a central problem in population genomics. The overall goal of this study is to characterize the relative effects of demography and selection in the genome of Populus trichocarpa, a riparian deciduous tree species of North America. Specifically, I used a variety of methods to summarize patterns of genetic diversity and population structure in P. trichocarpa, and to reconstruct its demographic history. I subsequently incorporated these demographic insights to guide the application of several methods to identify genome-wide targets of natural selection within and among rangewide populations adapted to heterogeneous selection regimes. Results of this study provide insights into the history of divergence and differentiation in P. trichocarpa populations and help us identify the functional genetic variants contributing to phenotypic divergence and fitness of the individuals in it.en
dc.description.degreePh. D.en
dc.format.mediumETDen
dc.identifier.othervt_gsexam:12369en
dc.identifier.urihttp://hdl.handle.net/10919/87515en
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectEvolutionary Genomicsen
dc.subjectPopulus trichocarpaen
dc.subjectSpeciationen
dc.subjectSelectionen
dc.subjectDemographic historyen
dc.subjectSelectionen
dc.titleEvolutionary Genomics of Populus trichocarpa (Western Poplar)en
dc.typeDissertationen
thesis.degree.disciplineForestryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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