Index Catalog // ScholarsArchive@OSU

Susceptibility of coast redwood seedlings to Phytophthora ramorum

Creator:: Lucas, Sunny L.
Abstract:: Coast redwood (Sequoia sempervirens) (D. Don) Endl. is a host for Phytophthora ramorum but it was unclear if the pathogen represents a significant disease risk to this tree species. In this study the susceptibility of coast redwood seedlings and the likelihood of sporulation on redwood were examined. Two methods were...
Resource Type:: Masters Thesis
Full Text:: Sunny L. Lucas for the degree of Master of Science in Botany and Plant Pathology presented on March 18

Diversity and Impact of Soft Rot Pathogens of Potato in the Columbia Basin

Creator:: Brazil, Jessie A.
Abstract:: Bacterial soft rot of potato (Solanum tuberosum), caused by Pectobacterium and Dickeya species, is among the most common and destructive potato diseases in the United States. These pathogens cause a variety of vascular wilts, and in potato cause a disease complex that includes tuber soft rot, blackleg, aerial stem rot,...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Kenneth Frost Bacterial soft rot of potato (Solanum tuberosum), caused by Pectobacterium

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Creator:: Sathuvalli, Vidyasagar R.
Abstract:: The hundred-year history of the hazelnut industry in the Pacific Northwest is threatened by eastern filbert blight (EFB) caused by the fungus Anisogramma anomala (Peck) E. Müller. Marker-assisted selection (MAS) has been extensively used for ‘Gasaway’ resistance in the hazelnut breeding program at Oregon State University. Concern over breakdown of...
Resource Type:: Masters Thesis
Full Text:: Blight in European Hazelnut (Corylus avellana L.) Abstract approved

Ascospore viability and dispersal from pruned branches infected with Anisogramma anomala

Creator:: Heckert, Stephanie
Abstract:: Viability and dispersal of ascospores of Anisogramma anomala, the cause of eastern filbert blight (EFB) on European hazelnut, from diseased branches pruned from trees were measured. In each of two years, branches bearing stromata of A. anomala were cut in mid-December and compared to branches cut near budbreak in March,...
Resource Type:: Masters Thesis
Full Text:: blight (EFB) on European hazelnut, (Corylus avellana L.) in the Pacific Northwest (20). A perennial

Post-dispersal seed fates in a Western Oregon native prairie

Creator:: Clark, Deborah L.
Abstract:: Knowledge of post-dispersal seed fates and other regeneration characteristics is crucial for predicting abundances and distributions of populations and, ultimately, community species composition and diversity. Seed fate studies, however, are rare primarily due to the difficulty of determining seed fates and causes of mortality. This thesis investigated post-dispersal seed fates...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Deborah L. Clark for the degree of Doctor of Philosophy in Botany

Phylogenetic relationships of the bumblebees (Apidae: Hymenoptera) in the Pacific Northwest of America inferred from mitochondrial cytochrome oxidase gene sequences

Creator:: Pongprasert, Weerathep
Resource Type:: Dissertation
Full Text:: , Dr. John Lattin and Dr. Kenneth B. Johnson, for their advice and assistance during my study. I am

Serial manure amendments : effects on soil properties and root rot of sweet corn

Creator:: Cox, Bonnie S. Hoffman
Abstract:: The effect of serial (multiple-year) organic matter (OM) amendment on soil properties has been described in some cropping systems, although less is known about the effect of serially amended field soils on soil-borne plant diseases. The objectives of this study were to describe the effects of the third and fourth...
Resource Type:: Masters Thesis
Full Text:: multiple sweet corn (Zea mays L. cv Golden Jubilee) bioassays conducted in the amended field soils

Understanding Host-Pathogen Interactions in the Sphaerulina musiva-Populus Pathosystem

Creator:: Dunnell, Kelsey Liann
Abstract:: Host-parasite interactions between the pathogen, Sphaerulina musiva, and its host, Populus spp., were examined in a series of studies. In the first study, variation in resistance of Populus nigra from 7 locations in Europe was differentiated based on the parameters cankers per cm and disease severity score. The analysis evaluated...
Resource Type:: Dissertation
Full Text:: my committee members at Oregon State University: Dr. Thomas Wolpert, Dr. Kenneth Johnson, Dr

Interrelationship of wheat cultivar mixtures, stripe rust and yield

Creator:: Akanda, Shamsul I.
Resource Type:: Dissertation
Full Text:: special note of thanks goes to my committee members Kenneth B. Johnson, Mary L. Powelson, Warren E

Suppression of Microdochium Patch on Annual Bluegrass Putting Greens using Iron Sulfate, Phosphorous Acid, Sulfur, and Mineral Oil

Creator:: Mattox, Clint M.
Abstract:: Managing Microdochium patch on intensively manicured annual bluegrass putting greens is a challenge for turfgrass professionals in cool-humid climates similar to the Pacific Northwest. Fungicides are the predominant means to mitigate damage caused by this fungal pathogen, however pesticide restrictions are making it even more challenging to suppress Microdochium patch....
Resource Type:: Dissertation
Full Text:: concern on the majority of golf courses (Mann and Newell, 2005). Annual bluegrass (Poa annual L.) is

ScholarsArchive@OSU

Susceptibility of coast redwood seedlings to Phytophthora ramorum

Diversity and Impact of Soft Rot Pathogens of Potato in the Columbia Basin

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Ascospore viability and dispersal from pruned branches infected with Anisogramma anomala

Post-dispersal seed fates in a Western Oregon native prairie

Phylogenetic relationships of the bumblebees (Apidae: Hymenoptera) in the Pacific Northwest of America inferred from mitochondrial cytochrome oxidase gene sequences

Serial manure amendments : effects on soil properties and root rot of sweet corn

Understanding Host-Pathogen Interactions in the Sphaerulina musiva-Populus Pathosystem

Interrelationship of wheat cultivar mixtures, stripe rust and yield

Suppression of Microdochium Patch on Annual Bluegrass Putting Greens using Iron Sulfate, Phosphorous Acid, Sulfur, and Mineral Oil

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