Index Catalog // ScholarsArchive@OSU

Fescue taxonomy in the Pacific coast states

Creator:: Wilson, Barbara L.
Abstract:: Accurate taxonomy is essential to preservation and management of native grasses. Four problems in fescue taxonomy were investigated: the identity of the native fescue that dominates western Oregon and Washington prairies, the relationship of native Festuca roemeri to closely related grasses, the status of F. howellii and F. washingtonica, and...
Resource Type:: Dissertation
Full Text:: Taxonomy in the Pacific Coast States. Abstract approved: Aaron Liston Accurate taxonomy is essential to

Evolutionary relationships and an investigation of sympatric speciation within Limnanthaceae

Creator:: Meyers, Stephen C.
Abstract:: Limnanthes floccosa ssp. floccosa and L. floccosa ssp. grandiflora are two of five subspecies of Limnanthes floccosa endemic to vernal pools in southern Oregon and northern California. Three seasons of monitoring natural populations have quantified that L. floccosa ssp. grandiflora is always found growing sympatrically with L. floccosa ssp. floccosa...
Resource Type:: Dissertation
Full Text:: southern Oregon and northern California. Three seasons of monitoring natural populations have quantified

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

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:: Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to

Copper and streptomycin resistance in Pseudomonas syringae isolated from Pacific Northwest nurseries

Creator:: Scheck, Heather J.
Resource Type:: Dissertation
Full Text:: isolated from Pacific Northwest nurseries AN ABSTRACT OF THE DISSERTATION OF Heather J. Scheck of the

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Creator:: Wolfenbarger, Sierra N.
Abstract:: Podosphaera macularis, causal agent of hop powdery mildew, is known to produce cleistothecia (syn. chasmothecia) in eastern North America and Europe, but ascocarps are not reported from the Pacific Northwestern region of North America. Reasons for the apparent absence of cleistothecia in the Pacific Northwest are unknown. We established that...
Resource Type:: Masters Thesis
Full Text:: reported from the Pacific Northwestern region of North America. Reasons for the apparent absence of

Evaluation of New Wine Grape Cultivars for Production Potential in Southern Oregon [1990-1991]

Creator:: Sugar, David and Hilton, Richard
Abstract:: Climatic conditions in southern Oregon are unique among the wine-growing regions of the Pacific Northwest. Previous experience has shown that one strength of this region lies in the production of warm-climate cultivars which may not mature properly in other regions of Oregon. The current selection of such cultivars with known...
Resource Type:: Technical Report
Full Text:: for Production Potential in Southern Oregon Principal Investigators: David Sugar, Instructor

Mycorrhizal and other root endophytic fungi of lupines in the Pacific Northwest

Creator:: O'Dell, Thomas E.
Abstract:: We investigated the root endophytic fungi of lupine using four approaches: (1) occurrence of fungal colonization in field-collected roots; (2) growth response of L. latifolius to inoculation with two types of fungi; (3) structure of root colonizations of Pinus and Lupinus by Phialocephala fortinii, a septate endophytic fungus of lupine;...
Resource Type:: Dissertation
Full Text:: in the Pacific Northwest AN ABSTRACT OF THE THESIS OF Thomas E. O'Dell for the degree of Doctor

Genetics of sexuality and population genetics of Phellinus weirii

Creator:: Angwin, Peter A.
Abstract:: Phellinus weirii (Murr.) Gilbertson, cause of laminated root and butt rot, is a heterothallic basidiomycete lacking clamp connections. Two biological species groups of the fungus have been hypothesized, the Douglas-fir and cedar-types, on the basis of physiological, morphological and epidemiological differences. Single-spore and vegetative isolates differ in cultural morphology, nuclear...
Resource Type:: Dissertation
Full Text:: root diseases in the Pacific Northwest. The disease has been estimated to reduce forest productivity

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'

Creator:: Quito-Avila, Diego F.
Abstract:: 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 Pacific Northwest (Washington, Oregon and British Columbia, Canada) is highly susceptible to Raspberry crumbly fruit, a virusinduced...
Resource Type:: Dissertation
Full Text:: most grown red raspberry cultivar in the Pacific Northwest (Washington, Oregon and British Columbia

Distribution of Phytophthora rubi and Pratylenchus penetrans in Pacific Northwest Red Raspberry (Rubus idaeus) Fields

Creator:: Kroese, Duncan R.
Abstract:: The Pacific Northwest produces over 95% of the nation’s processed red raspberries, valued at over $65 million. Two of the major soilborne pathogens effecting the production of raspberry in this region are the oomycete Phytophthora rubi, which causes root rot in red raspberry plants, and the plant-parasitic nematode Pratylenchus penetrans,...
Resource Type:: Masters Thesis
Full Text:: in Pacific Northwest Red Raspberry (Rubus idaeus) Fields. Abstract approved

ScholarsArchive@OSU

Fescue taxonomy in the Pacific coast states

Evolutionary relationships and an investigation of sympatric speciation within Limnanthaceae

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Copper and streptomycin resistance in Pseudomonas syringae isolated from Pacific Northwest nurseries

Identification and distribution of the mating-type locus and development of cleistothecia of Podosphaera macularis

Evaluation of New Wine Grape Cultivars for Production Potential in Southern Oregon [1990-1991]

Mycorrhizal and other root endophytic fungi of lupines in the Pacific Northwest

Genetics of sexuality and population genetics of Phellinus weirii

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'

Distribution of Phytophthora rubi and Pratylenchus penetrans in Pacific Northwest Red Raspberry (Rubus idaeus) Fields

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