Index Catalog // ScholarsArchive@OSU

The effects of abscisic acid on gene expression during embryogenesis in wheat

Creator:: Williamson, John D. (John David), 1948-
Resource Type:: Dissertation
Full Text:: . ACKNOWLEDGEMENTS I wish to express sincere appreciation to my major professor, Dr. Ralph Quatrano, for his

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Creator:: Kaye, Thomas N.
Abstract:: Transition matrix models are one of the most widely used tools for assessing population viability. The technique allows inclusion of environmental variability, thereby permitting estimation of probabilistic events, such as extinction. However, few studies use the technique to compare the effects of management treatments on population viability, and fewer still...
Resource Type:: Dissertation
Full Text:: Blouin, Steve Radosevich, and Ralph Berry, for taking the time to help me and guide my studies. Finally

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Creator:: Lolas, Mauricio
Abstract:: The effects of fenamiphos on soil and root populations of Pratylenchus penetrans were evaluated in four red raspberry cv. Willamette fields in Northwestern Oregon. Field 1 was a silty clay loam with 53% organic matter (OM). Field 2 and 3 were silty loam soils with 3.25 and 2.55% OM, respectively...
Resource Type:: Masters Thesis
Full Text:: Strik, Dr. Jay Pscheidt, and Dr. Ralph Berry, for their contributions to this thesis, their advices

Characterization of the replication, incompatibility, and recombination regions of Pseudomonas syringae pv. phaseolicola plasmid pEXC8080

Creator:: Poplawsky, Alan R.
Resource Type:: Dissertation
Full Text:: . Lyle Brown, Larry Moore, Ralph Quatrano, Charles Warren, Leo Parks, Don Armstrong and Mary Powelson

Responses of algal populations to parasitism by Aphelidium chlorococcarum and chytrids in an Oregon sewage lagoon

Creator:: Woods, Wendy W.
Abstract:: The abundance of algal species and their parasites was monitored weekly for two years in a sewage lagoon at the Corvallis Airport, Oregon. During the cooler months, Euglena species were dominant followed by a Chlamydomonas assemblage in the spring and a predominantly Scenedesmus assemblage in the summer and fall. Parasites...
Resource Type:: Dissertation
Full Text:: . Thanks also to the other members of my committee: Peter Bottomley, William Denison, JoAnn Leong, Ralph

Expression of a group 3 LEA protein during maturation of Zea mays L. embryos

Creator:: Thomann, Estela B.
Resource Type:: Masters Thesis
Full Text:: as the seed matures (Walton, 1981; Black, 1983). These changes in endogenous ABA during seed

Pyrenophora tritici-repentis : investigation of factors that contribute to pathogenicity

Creator:: Holman, Thomas W.
Abstract:: Pyrenophora tritici-repentis (Ptr) is the necrotrophic fungus responsible for tan spot of wheat (Triticum aestivum). Ptr causes disease on susceptible wheat cultivars through the production and secretion of host-selective toxins (HSTs). HSTs are compounds that are only known to be produced by fungi and considered to be primary determinants of...
Resource Type:: Masters Thesis
Full Text:: (Walton, 1996; Markham and Hille, 2001; Friesen et al., 2007). Infiltration of purified HSTs into

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Creator:: Perkins, Lora B.
Abstract:: There is growing interest in using nutrient manipulations to control invasive plants such as Brornus lectorurn L. (cheatgrass). Both labile (sucrose) and recalcitrant (straw and sawdust) carbon sources are added to the soil surface to reduce plant available soil N via soil microbial immobilization. However, the application rates used in...
Resource Type:: Masters Thesis
Full Text:: . Fischer, M.H., N. Yu. G.R. Gray, J. Ralph, L.Anderson and J.A. Marlett. 2004. The gel-forming

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Creator:: Marsden, Katherine E.
Abstract:: The effects of five cytokinin antagonists on the growth of cytokinin-autonomous lines of Phaseolus lunatus cv. Kingston, Phaseolus vulgaris cv. Great Northern, and Nicotiana tabacum cv. Wisconsin 38 callus tissues have been compared. The antagonists tested included four N⁴-substituted 4-amino-2-methylthiopyrrolo[2,3-d]pyrimidines bearing the following N⁴ side chains, 4-n-pentyl- (ms²pnN⁴Prp), 4-n-hexyl- (ms²HxN⁴Prp),...
Resource Type:: Masters Thesis
Full Text:: , Ralph, Ellen, and Jean, for all of their love, support, understanding and most of all their patience; to

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation

ScholarsArchive@OSU

The effects of abscisic acid on gene expression during embryogenesis in wheat

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Characterization of the replication, incompatibility, and recombination regions of Pseudomonas syringae pv. phaseolicola plasmid pEXC8080

Responses of algal populations to parasitism by Aphelidium chlorococcarum and chytrids in an Oregon sewage lagoon

Expression of a group 3 LEA protein during maturation of Zea mays L. embryos

Pyrenophora tritici-repentis : investigation of factors that contribute to pathogenicity

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Landscape Genomics and Climatic Responses of Willamette Valley Alders

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