Index Catalog // ScholarsArchive@OSU

Creator:: Englander, Larry
Abstract:: Phytophthora lateralis Tucker and Milbrath, causal agent of a serious fungus root rot of Chamaecyparis lawsoniana, has seriously damaged natural stands in southwestern Oregon forests and affected ornamentals throughout the Pacific Northwest. Progress with an effective control program in the field has been limited by lack of critical knowledge of...
Resource Type:: Dissertation
Full Text:: Growth and sporulation of Phytophthora lateralis in vitro

Creator:: Ostrofsky, William Dow
Abstract:: Chamaecyparis lawsoniana, an extremely valuable timber tree species, is highly susceptible to a serious, soil -borne root disease caused by Phytophthora lateralis. Disease outbreaks of epidemic proportions are continually causing high mortality in natural stands of the host tree. Practical control measures rely on an understanding of the many factors...
Resource Type:: Masters Thesis
Full Text:: : SURVIVAL OF PHYTOPHTHORA LA TER.A LIS IN AN ORGANIC MATTER FRACTION OF THE SOIL Abstract approved

Creator:: Murray, Marion S.
Abstract:: In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...
Resource Type:: Masters Thesis
Full Text:: Phytophthora lateralis AN ABSTRACT OF THE THESIS OF Marion S. Murray for the degree of Master of Science

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:: -Orford-cedar for resistance to Phytophthora lateralis, a causal agent of root disease, begins by

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:: Port-Orford-cedar and Phytophthora lateralis : grafting and

Creator:: Martin, Danielle K. H.
Abstract:: Since around 1923 Port-Orford-cedar (Chamaecyparis lawsoniana (A. Murray) Parl.) has been affected by Phytophthora root disease caused by the virulent introduced pathogen Phytophthora lateralis. A systematic resistance testing and breeding program located at the USDA Forest Service Dorena Genetic Resource Center in Cottage Grove, Oregon was initiated in 1997 with...
Resource Type:: Masters Thesis

Creator:: Clark, William C.
Abstract:: Phytophthora lateralis is the causal agent of cedar root rot, a fatal forest pathogen whose principal host is Chamaecyparis lawsoniana (Port-Orford-cedar), a predominantly riparian-restricted endemic tree species of ecological, economical, and cultural importance to coastal Oregon and California. Local scale distribution of P. lateralis is thought to be associated with...
Resource Type:: Masters Thesis

ScholarsArchive@OSU