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dc.contributor.advisorKallenbach, Robert L.eng
dc.contributor.advisorSleper, D. A.eng
dc.contributor.authorDierking, Ryan M., 1983-eng
dc.date.issued2010eng
dc.date.submitted2010 Falleng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on April 30, 2014).eng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionVitaeng
dc.description.abstractWe describe three experiments; the first two experiments were conducted in a greenhouse and with the use of cold chambers. The first experiment determined the effect of endophyte (Neotyphodium ceonophialum) presence under cold (4.5oC) and freezing (-3, -6, -9, and -12oC) conditions on two genotypes of Continental tall fescue [Lolium arundinaceum (Schreb.) S.J. Darbysh.], one Mediterranean tall fescue, and two F. arundinacea var. atlantigena St. Yves. The plants were assessed for growth, measured by leaf extension rate (LER), proline, fructan, and mono- and disaccharides concentrations at 25.0 and 4.5oC. Additionally, the survivability of these plants was assessed at -3, -6, -9, and -12oC. It was found that endophyte presence did not affect the LER or concentrations of proline and the mono- and disaccharides at 25.0 or 4.5oC. In the second experiment four Continental (PI 172423, PI 283297, PI 314684, and Kentucky-31) and three Mediterranean accessions (PI 200339, PI 610956, Flecha) were used to determine the growth quantified by LER, abscisic acid (ABA), proline, fructan, and mono- and disaccharides concentrations. Mediterranean accessions were different from Continental accessions for all parameters measured at 4.5oC. The final experiment included the development of a linkage map from a cross between a Mediterranean (103-2) x Continental (R43-64) cross, and identifying QTL relating to fall growth (FG), measured by LER, and winter survival (WS). This is the first reported linkage map of Mediterranean tall fescue as well as the use of DArTFest markers using array technology. Major QTL were found for FG and WS at each location across years. Based on all data in this study it appears these two types of tall fescue are unique species.eng
dc.format.extentxii, 177 pageseng
dc.identifier.urihttp://hdl.handle.net/10355/42558
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsOpenAccess.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.subjectTall fescueeng
dc.subjectCold toleranceeng
dc.subjectFall growtheng
dc.subjectLinkage mapeng
dc.subjectQTL for cold tolerance and fall growtheng
dc.subjectProlineeng
dc.subject.FASTTall fescueeng
dc.subject.FASTCold -- Physiological effecteng
dc.subject.FASTEndophyteseng
dc.subject.FASTPlant molecular biologyeng
dc.titlePhysiological responses of continental (summer-active) and mediterranean (summer-dormant) tall Fescue to cold stress and identification of underlying QTL for fall growth and winter survivaleng
dc.typeThesiseng
thesis.degree.disciplinePlant, insect and microbial sciences (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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