Index Catalog // ScholarsArchive@OSU

Community composition and activities of denitrifying bacteria in soils

Creator:: Rich, Jeremy J.
Abstract:: Few studies have directly compared denitrifying community composition and activities in soils by coupling molecular-genetic techniques and traditional measures of denitnfication. I investigated communities of denitrifying bacteria from adjacent meadow and forest soils in the Cascade Mountains, Oregon. A key gene in the denitrification pathway, N₂O reductase (nosZ), served as...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Jeremy J. Rich for the

Seed quality and plant establishment studies of seashore paspalum (Paspalum vaginatum Sw.)

Creator:: Baker, Stanley D.
Abstract:: Seashore paspalum (Paspalum vaginatum Sw.) is an important warm-season perennial turfgrass, known for its tolerance to salinity. Turfgrass is used for homes, municipalities, sod farms, resorts, and sports fields. Seashore paspalum has historically been planted in sub-tropical and tropical climates because of its heat tolerance. Seashore paspalum could become an...
Resource Type:: Dissertation
Full Text:: Approved: ____________________________________________________ Russell S. Karow Seashore paspalum

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Creator:: Almquist, Vance Warner
Abstract:: This dissertation reports on four related, though separate projects. The first project details the process of carrying out a digitally augmented soil mapping (DSM) effort alongside an ongoing survey in Oregon's Ochoco National Forest (ONF) using a Random Forest algorithm. The second chapter describes a initial soil survey in Oregon's...
Resource Type:: Dissertation
Full Text:: cataclysmic eruptive phase as presented in Matz,S., 1998

Assessing the role of reactive metal species in soil organic matter cycling using chemical imaging

Creator:: Keiluweit, Marco
Abstract:: Intimate associations with reactive metal species permanently protect soil organic matter (SOM) from microbial access and oxidation, contributing to the build-up of organic carbon (C) stocks in soils. It is increasingly recognized, however, that such associations can be reversible and that reactive metal species might even facilitate the oxidation of...
Resource Type:: Dissertation
Full Text:: , Jeremy Bougoure, Xavier Mayali, David Kilcoyne, Hans Bechtel, Matthew Marcus, Suet ‘Shirley’ Liu

Glyphosate-resistance in Italian ryegrass (Lolium multiflorum): evaluation and investigation of the mechanisms of resistance

Creator:: Perez-Jones, Alejandro
Abstract:: A suspected glyphosate-resistant Italian ryegrass (Lolium multiflorum) (OR) population was collected from a filbert (Corylus avellana L.) orchard near Portland, OR. Based on the dose-response experiments conducted in the greenhouse, it was found that the suspected glyphosate-resistant population was approximately fivefold more resistant to glyphosate than the susceptible (S) population....
Resource Type:: Dissertation
Full Text:: susceptible (S) population. Furthermore, it was found that the S population accumulated between three and

Quantitative trait locus analysis of agronomic and malting quality traits in the Harrington x Morex barley (Hordeum vulgare L.) mapping population

Creator:: Marquez-Cedillo, Luis A.
Abstract:: Characterization of the determinants of economically important phenotypes showing complex inheritance should lead to more effective use of genetic resources. This study was conducted to determine the number, genome location and effects of QTLs determining malting quality and agronomic traits in the two North American barley quality standards. Using a...
Resource Type:: Dissertation
Full Text:: linkage map. Drs. W. Legge, B. Rossnagel, S. Ulirich, and D. Wesenberg were involved in the phenotype

Effects of selection, recombination and plot type on phenotypic and quantitative trait locus analyses in barley (Hordeum vulgare L.)

Creator:: Iyamabo, Odianosen E.
Resource Type:: Dissertation
Full Text:: and F2-S populations respectively). The number and position of quantitative trait loci (QTL) detected

Brassicaceae Seed Persistence and Dormancy in the Willamette Valley

Creator:: Flick, Gabriel D.
Abstract:: Producers in the Willamette Valley of Oregon are interested in growing canola as a rotational crop in grass seed and cereal rotations. Many other Brassicaceae seed crops also are produced within the valley. Concerns of seed persistence and volunteer contamination of Brassicaceae seed crops prompted the investigation of seed persistence...
Resource Type:: Dissertation

Exploiting Hordeum vulgare subsp. spontaneum genetic resources : diversity analysis and germplasm development

Creator:: Matus, Iván Ariel
Abstract:: Wild barley (Hordeum vulgare subsp. spontaneum) could be a source of useful genes for improving cultivated barley. The useful genes present in Hordeum vulgare subsp. spontaneum may be new alleles at described loci, or these may be entirely new genes in the sense that there is limited allelic variation at...
Resource Type:: Dissertation
Full Text:: . the scald-resistance gene Ri-s 14 (Garvin et al., 1997). This research involved three components

The link between nitrogen cycling and soil microbial community composition in forest soils of western Oregon

Creator:: Boyle, Stephanie A.
Abstract:: The objectives of this thesis were to examine the links between soil microbial community composition and function using the nitrogen (N) cycle as a model for these interactions and to assess the impact of environmental factors such as microclimate, vegetation type, and nutrient availability on microbial diversity and N transformations...
Resource Type:: Dissertation
Full Text:: and lab setup: Rockie Yarwood, Jeremy Rich, Elizabeth Brewer, Rama Dhungel, Katie Tinnesand, and

ScholarsArchive@OSU

Community composition and activities of denitrifying bacteria in soils

Seed quality and plant establishment studies of seashore paspalum (Paspalum vaginatum Sw.)

Scaling, ash-driven bistability, and other agents of soilscape genesis discovered while digitally mapping soils of the Blue Mountains, Oregon

Assessing the role of reactive metal species in soil organic matter cycling using chemical imaging

Glyphosate-resistance in Italian ryegrass (Lolium multiflorum): evaluation and investigation of the mechanisms of resistance

Quantitative trait locus analysis of agronomic and malting quality traits in the Harrington x Morex barley (Hordeum vulgare L.) mapping population

Effects of selection, recombination and plot type on phenotypic and quantitative trait locus analyses in barley (Hordeum vulgare L.)

Brassicaceae Seed Persistence and Dormancy in the Willamette Valley

Exploiting Hordeum vulgare subsp. spontaneum genetic resources : diversity analysis and germplasm development

The link between nitrogen cycling and soil microbial community composition in forest soils of western Oregon

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search