Index Catalog // ScholarsArchive@OSU

Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

Creator:: Oh, Eunsung
Abstract:: Breeding Port-Orford-cedar for resistance to Phytophthora lateralis, a causal agent of root disease, begins by screening, through artificial inoculation, phenotypically resistant trees selected from natural stands. The successful program selected tolerant or resistant POC parent trees for the purpose of disease management. Candidate resistant POCs were used in my dissertation...
Resource Type:: Dissertation
Full Text:: , Drs. Everett Hansen, Jeffrey Stone, Gregory Filip, Joseph Spatafora, and William Proebsting. Their

Port-Orford-cedar and Phytophthora lateralis : grafting and heritability of resistance in the host, and variation in the pathogen

Creator:: McWilliams, Michael G.
Abstract:: Port-Orford-cedar (Chamaecyparis lawsoniana) is a forest tree native to a small area of Oregon and California. A root disease caused by Phytophthora lateralis causes widespread mortality of Port-Orford-cedar. This dissertation examines three important elements of the Port-Orford-cedar P. lateralis pathosystem related to breeding for disease resistance: use of resistant rootstocks...
Resource Type:: Dissertation
Full Text:: Resistance in the Host. and Variation in the Pathogen. Abstract approved: Everett M. Hansen Port-Orford

Development, reproductive morphology, and cytology of Halosaccion glandiforme (Gmelin) Ruprecht (Rhodophyceae, Palmariales)

Creator:: Mitman, Grant Gregory
Abstract:: Halosaccion glandiforme, a member of the family Palmariaceae, is a common macrophyte found in the high to middle intertidal zones of the north temperate Pacific Ocean. Plants were grown in culture from spores and the lift history was critically examined by the use of scanning EM and light microscopy. H....
Resource Type:: Masters Thesis
Full Text:: Gregory Mitman for the degree of Master of Science in Botany and Plant Pathology presented on August 17

Seasonal pattern of secondary growth in stems of northern white spruce (Picea glauca (Moench) Voss)

Creator:: Gregory, Robert A.
Abstract:: Cambial activity in white spruce stems in Alaska was observed from April, 1964 to September, 1965 in over 300 samples taken from 50- to 60-year-old natural stands. Mitotic index was used as a measure of the rate of periclinal division of fusiform cells in the cambial zone. Anticlinal divisions are...
Resource Type:: Dissertation
Full Text:: white spruce (Picea glauca (moench) Voss)) AN ABSTRACT OF THE THESIS OF ROBERT AARON GREGORY for the

Epidemiology of stripe rust (Puccinia striiformis west.) of wheat in Oregon

Creator:: Shaner, Gregory Ellis
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF GREGORY ELLIS SHANER for the

Biological and molecular characterization of wild type parental and nonpathogenic mutant strains of Pseudomonas syringae pathovars phaseolicola and syringae

Creator:: Bertoni, Gregory
Abstract:: The in planta growth of three wild type strains of phytopathogenic bacteria and three nonpathogenic mutant strains was studied to determine if mutations eliminating the ability of the mutant strains to cause disease had affected their growth in leaf tissue. The mutant strains were obtained by Tn5 mutagenesis of Pseudomonas...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Gregory Bertoni for the degree of Master of Science in Botany and Plant

Silviculture Impacts and Population Genomics of Coniferiporia sulphurascens, the Causal Agent of Laminated Root Rot

Creator:: McMurtrey, Shawn
Abstract:: Within the Pacific Northwest, USA, root diseases of conifers are a major forest health concern. These diseases are primarily caused by basidiomycete fungi. These fungal associates play a vital role in carbon sequestration but also have a significant negative economic impact within the timber industry. As a result, research on...
Resource Type:: Masters Thesis
Full Text:: , Forest Service, Pacific Northwest Region 13. Hadfield, J. S., Goheen, D. J., Filip, G. M

Phytophthora species and riparian alder tree damage in western Oregon

Creator:: Sims, Laura L.
Abstract:: The genus Phytophthora contains some of the most destructive pathogens of forest trees, including the most destructive pathogen of alder in recent times, Phytophthora alni. Alder trees were reported to be suffering from canopy dieback in riparian ecosystems in western Oregon, which prompted a survey of alder health and monitoring...
Resource Type:: Dissertation
Full Text:: Tree Damage in Western Oregon Abstract approved: Everett M. Hansen The genus Phytophthora

Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

Creator:: Rosso, Pablo H.
Abstract:: This study was directed to improve our understanding of the ecology of Swiss needle cast (SNC) of Douglas-fir, a disease that produces extensive damage to forests and plantation in the coastal region of Oregon and Washington. A disease prediction model for the coastal area of Oregon was built by establishing...
Resource Type:: Dissertation
Full Text:: of Swiss Needle Cast of Douglas-Fir in Coastal Oregon. Abstract approved: Everett M. Han' en This

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: PHELLINUS WEIRII IN YOUNG-GROWTH DOUGLAS-FIR Abstract approved: Redacted for Privacy tverett M. Hansen

ScholarsArchive@OSU

Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

Port-Orford-cedar and Phytophthora lateralis : grafting and heritability of resistance in the host, and variation in the pathogen

Development, reproductive morphology, and cytology of Halosaccion glandiforme (Gmelin) Ruprecht (Rhodophyceae, Palmariales)

Seasonal pattern of secondary growth in stems of northern white spruce (Picea glauca (Moench) Voss)

Epidemiology of stripe rust (Puccinia striiformis west.) of wheat in Oregon

Biological and molecular characterization of wild type parental and nonpathogenic mutant strains of Pseudomonas syringae pathovars phaseolicola and syringae

Silviculture Impacts and Population Genomics of Coniferiporia sulphurascens, the Causal Agent of Laminated Root Rot

Phytophthora species and riparian alder tree damage in western Oregon

Distribution and prediction of Swiss needle cast of Douglas-fir in coastal Oregon

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search