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Browsing Theses and Dissertations (Botany and Plant Pathology) by Title

Browsing Theses and Dissertations (Botany and Plant Pathology) by Title

Now showing items 85-104 of 198

Gene expression and intercellular transport of beet yellows closterovirus examined using tagged virus variants

Hagiwara, Yuka (1999-07-02)
Genetic analysis of catechol siderophore by Erwinia carotovora

Bull, Carolee Theresa, 1962- (1992-08-03)
Genetic diversity of populations of Astragalus oniciformis using inter-simple sequence repeat (ISSR) markers

Alexander, J. Andrew (2001-05-14)

Astragalus oniciformis Barneby is a xerophyte of the sagebrush deserts of central Idaho. It is a narrow endemic of the upper Snake River Plains where it inhabits stabilized, aeolian sand deposits over Quaternary basalt ...
Genetic variability in the eastern filbert blight pathosystem

Osterbauer, Nancy K. (1996-05-09)
Genetic variations in length of active growth period among races of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco

Irgens-Moller, Helge (1958-02-28)
Genomics-enabled exploration of insect toxicity in the Pseudomonas fluorescens group

Rangel, Lorena I. (2012-07-31)

Pseudomonas is a diverse genus of Gamma proteobacteria that are ubiquitous in the natural environment, including soil, water, plant surfaces, and animals. The Pseudomonas fluorescens group is a diverse collection of seve ...
Harvestable moss : communities, hosts, and accumulation

Peck, JeriLynn E. (1996-04-29)

With the increased recognition of moss as a secondary forest product has come an increased concern for the ecological ramifications of moss harvest. Three issues of primary concern are (1) characterizing the epiphyte com ...
Hop cone tip blight : a new disease in the Pacific Northwest

Bienapfl, John C. (2003-09-24)

A necrosis at the tip of cones was observed on hop (Humulus lupulus), cultivar "Nugget", grown in Oregon in the early 1990's. Fusarium sambucinum and F. avenaceum were recovered from symptomatic cones in 1998 and preli ...
Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Perkins, Lora B. (2006-12-01)
Identification and characterization of seven ROP GTPases in Zea mays

Christensen, Todd M. (2004-07-14)

Regulation of cell division and expansion are critical for plant development. The mechanisms that control these processes are not clearly understood in higher plants. In other eukaryotic models it has been shown that the ...
Impact of raspberry bushy dwarf virus, raspberry leaf mottle virus, and raspberry latent virus on plant growth and fruit crumbliness in red raspberry (Rubus idaeus L.) 'Meeker'

Quito-Avila, Diego F. (2011-11-21)

The United States is the third-largest producer of raspberries in the world. Washington State leads the nation in red raspberry (Rubus idaeus L.) production. 'Meeker', the most grown red raspberry cultivar in the Pacif ...
Impacts of fuel reduction thinning treatments on oak and chaparral communities of southwestern Oregon

Perchemlides, Keith A. (2006-06-02)

In response to concerns about excessive stand densities and high-severity wildfires, land managers in the western United States are carrying out extensive programs of fuel reduction thinning. How will these sudden redu ...
Impacts of ponderosa pine forest restoration treatments on the ectomycorrhizal fungal community and fine root biomass in the Blue Mountains of Oregon

Smith, Jane E. (Jane Elizabeth) (2004-05-07)

Before the arrival of Euro-Americans, the inland Pacific Northwest was settled by native people whose frequent intentional burning of the landscape promoted open stands dominated by large fire-resistant ponderosa pine. ...
The imprint of coarse woody debris on soil biological and chemical properties in the western Oregon Cascades

Spears, Julie D. H. (2002-04-03)

The abundance and spatial heterogeneity of coarse woody debris (CWD) on the forest floor is a prominent feature of Pacific Northwest (PNW) forest ecosystems. The effect of CWD on soil solution chemistry, nutrient cycli ...
The infection and colonization of Douglas-fir needles by the Swiss needle cast pathogen, Phaeocryptopus gaeumannii (Rhode) Petrak

Capitano, Bryan R. (1999-05-25)

Phaeocryptopus gaeumannii is a pathogenic fungus on Douglas-fir needles which has become a serious threat to timber production in the last decade along the Oregon coast This research was undertaken to describe the gene ...
Influence of a sudangrass green manure on microorganisms and early dying of potatoes in two soils

Parks, Robin L. (1998-04-22)

Effect of a sudangrass green manure in two soil types on the activity, populations and community structure of soil microorganisms, populations of Verticillium dahliae in soil and on potato roots, and potato early dying ...
The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

McKernan, Brie-Anne (2004-04-19)

In the wetland prairie of William L. Finley National Wildlife Refuge (FNWR) in western Oregon, we investigated the response of Delphinium pavonaceum Ewan (peacock larkspur, Ranunculaceae), an endangered perennial forb, ...
Interactions between pea seed-borne mosaic virus pathotype 1 and Pisum sativum resistance gene sbm-1

Keller, Karen E. (1995-09-01)
Interactions of ammonia monooxygenase in Nitrosomonas europaea with hydrocarbons and subtituted hydrocarbons

Keener, William Kelvin (1995-01-20)
Interactive effects of stripe rust and plant competition in heterogeneous wheat populations

Finckh, Maria Renate (1991-10-25)

Disease has been implied as an important selective force acting in plant populations. This study was conducted to determine the effects of stripe rust (Puccinia striiformis) on the population dynamics of wheat (Tritic ...