Index Catalog // ScholarsArchive@OSU

Mapping quantitative trait loci underlying genome-wide recombination rate and mating system differences in meadowfoam

Creator:: Kishore, Venkata Krishna
Abstract:: Meadowfoam (Limnanthes alba Bentham; Order: Brassicales; Family: Limnanthaceae) is a self-compatible, predominantly allogamous, insect pollinated species. Meadowfoam oil is a source of novel unsaturated very-long-chain (VLC) seed oils (C₂₀ and C₂₂) with low concentrations of saturated fatty acids (typically less than 2%) and outstanding oxidative stability. Here we report the...
Resource Type:: Dissertation
Full Text:: committee, Dr. Patrick M. Hayes. Dr. James C Peterson, Dr. Tony Chen and Dr. Gregory Thompson for their

Expression and Function of Populus Homologs to TERMINAL FLOWER 1 Genes: Roles in Onset of Flowering and Shoot Phenology

Creator:: Mohamed, Rozi
Abstract:: We isolated and characterized the expression of two genes from Populus trichocarpa that are homologous to the TERMINAL FLOWER 1 (TFL1) gene from the model annual plant Arabidopsis. In Arabidopsis, overexpression of the TFL1 gene extends the vegetative growth phase, and the homozygous mutant tfl1 allele causes early flowering and...
Resource Type:: Dissertation
Full Text:: : __________________________________________________ Steven H. Strauss Amy M. Brunner We isolated and characterized the expression of

Quantitative trait loci influencing free-threshing habit and spike morphology in wheat (Triticum aestivum L.)

Creator:: Jantasuriyarat, Chatchawan
Abstract:: Spike morphology characteristics and the free-threshing habit of wheat have been extensively investigated because of their evolutionary significance and practical importance. Several genetic systems that govern these traits have been reported. Some studies suggest polygenic inheritance while others have identified major genes. This study was conducted to identify and locate...
Resource Type:: Masters Thesis
Full Text:: . Patrick M. Hayes, and Dr. Gary P. Klinkhammer for serving on my graduate committee. Thanks are also

Simple sequence repeat marker development and mapping in cultivated sunflower, Helianthus annuus L.

Creator:: Yu, Ju-Kyung
Abstract:: The cultivated sunflower (Helianthus annuus L., x=17) is one of the most important annual oilseed crops in the world. There are very few publicly shared sequence-based DNA markers and genetic maps in sunflower, even though molecular DNA markers and genetic maps have become widely used in all areas of genetic...
Resource Type:: Dissertation
Full Text:: . Patrick M. Hayes, Dr. Oscar Riera-Lizarazu, and Dr. Robert P. Griffiths for their time and guidance. I

Molecular mechanisms underlying the high oleic acid phenotype in sunflower

Creator:: Schuppert, Gunnar Felix
Abstract:: Wildtype sunflower typically produces 12-24% oleic acid (18:1) and 70-82% linoleic acid (18:2). High-oleic sunflower, by contrast, produces up to 80-94% oleic acid. The monounsaturated oleic acid has a greater oxidative stability than the polyunsaturated linoleic acid, predominant in wildtype sunflower, and has greater nutritional benefits than polyunsaturated and saturated...
Resource Type:: Dissertation
Full Text:: members of my graduate committee, Dr. James C. Carrington, Dr. Patrick M. Hayes, Dr. Oscar Riera-Lizarazu

Enhancement of cold tolerance in tomato plants by genetic engineering of glycinebetaine biosynthesis

Creator:: Park, Eung-Jun
Abstract:: Tomato [Lycopersicon esculentum Mill.] plants are chilling sensitive and do not naturally accumulate glycinebetaine (GB), a metabolite that functions as a stress protectant in plants. While GB can increase tolerance of tomato plants to salt and drought stresses, its effect on chilling tolerance has not been examined. To evaluate whether...
Resource Type:: Dissertation
Full Text:: . Patrick M. Hayes, and Dr. Kenneth B. Johnson for kindly offering valuable suggestions regarding aspects

Understanding epistasis in linkage analysis : The Kap and lks2 loci in the Oregon Wolfe Barley poputlation

Creator:: McCoy, Serena B.
Abstract:: An organisms' genotype may not be reflected in its phenotype. For example, epistasis - the interaction of non-allelic genes can cause deviations from expected phenotypic ratios. The epistatic interaction between the hooded (Kap) and short-awned (lks2) loci in barley (Hordeum vulgare) precludes the localization of the Kap locus, based on...
Resource Type:: Undergraduate Thesis

Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

Creator:: Howe, Dana Kathryn
Abstract:: In forest trees from temperate and boreal regions, cold acclimation is an important adaptive trait that involves changes in gene expression and physiology. Genecological, quantitative genetic, and QTL studies have been used to study the genetics of cold acclimation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), but the genes responsible for...
Resource Type:: Masters Thesis
Full Text:: Microarrays. Abstract approved: Glenn T. Howe Amy M. Brunner

Phenotypic response and quantitative trait loci for resistance to Cephalosporium gramineum in winter wheat

Creator:: Quincke, Martin C.
Abstract:: Cephalosporium stripe (Cephalosporium gramineum) is an important disease limiting adoption of conservation tillage practices in the Pacific Northwest. The disease can cause severe loss of grain yield and quality in winter wheat (Triticum aestivum L.). Modified cultural practices can reduce disease incidence, but are not always dependable because of variation...
Resource Type:: Dissertation
Full Text:: Riera-Lizarazu, Dr. Patrick Hayes and Dr. Edward Peachey (Graduate School representative), for serving

Characterization of physiological resistance to white mold and search for molecular markers linked to resistance via advanced backcross QTL analysis in an interspecific cross between Phaseolus coccineus and P. vulgaris

Creator:: Haggard, Jack Erron
Abstract:: White mold, caused by Sclerotinia sclerotiorum (Lib.) de Bary, results in severe losses in the production of common bean, Phaseolus vulgaris, especially snap bean varieties. Advanced backcross QTL analysis was used to identify quantitative trait loci for resistance to white mold in an interspecific cross of P. vulgaris and P....
Resource Type:: Masters Thesis
Full Text:: from the market. Farmers now rely on other chemicals, such as Topsin® M and Endura®, but they require

ScholarsArchive@OSU

Mapping quantitative trait loci underlying genome-wide recombination rate and mating system differences in meadowfoam

Expression and Function of Populus Homologs to TERMINAL FLOWER 1 Genes: Roles in Onset of Flowering and Shoot Phenology

Quantitative trait loci influencing free-threshing habit and spike morphology in wheat (Triticum aestivum L.)

Simple sequence repeat marker development and mapping in cultivated sunflower, Helianthus annuus L.

Molecular mechanisms underlying the high oleic acid phenotype in sunflower

Enhancement of cold tolerance in tomato plants by genetic engineering of glycinebetaine biosynthesis

Understanding epistasis in linkage analysis : The Kap and lks2 loci in the Oregon Wolfe Barley poputlation

Identifying candidate genes associated with cold adaptation in Douglas-fir using DNA microarrays

Phenotypic response and quantitative trait loci for resistance to Cephalosporium gramineum in winter wheat

Characterization of physiological resistance to white mold and search for molecular markers linked to resistance via advanced backcross QTL analysis in an interspecific cross between Phaseolus coccineus and P. vulgaris

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