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Localization of sulfated polysaccharides in Fucus embryos

Creator:: Roberts, Mary Ann
Resource Type:: Masters Thesis
Full Text:: IN FUCUS EMBRYOS Abstract approved: Redacted for privacy URalph S. Quatrano Previous

Etiological studies on foot rot of wheat caused by Cercosporella herpotrichoides Fron.

Creator:: Byther, Ralph S.
Abstract:: Abundant conidial production occurs from colonized straws and plants infected with Cercosporella herpotrichoides Fron during the cool moist months of the growing season. Experiments were designed to study the survival, inoculum potential and competitive saprophytic ability of conidia in soil. Laboratory results indicated that cool moist soil favors the saprophytic...
Resource Type:: Dissertation
Full Text:: Robert L. Powelson Abundant conidial production occurs from colonized straws and plants infected with

Serpentine and non-serpentine edaphic ecology and the recovery of Lomatium cookii (Apiaceae), an endangered endemic of southwest Oregon

Creator:: Silvernail, Ian S.
Abstract:: The role of unusual geologies in plant distribution and form is well-known. Serpentine (ultramafic) soils exert a particularly strong influence on plants, as evidenced by a high level of endemism and the morphological and physiological traits displayed in adaptation to the extraordinary chemistry of these substrates. Adaptation may lead to...
Resource Type:: Masters Thesis
Full Text:: Ian S. Silvernail for the degree of Master of Science in Botany and Plant Pathology presented on

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

Creator:: Zeigler, Robert S.
Abstract:: This study describes the soils, vegetation and age structure of the Pinus contorta forests of Crater Lake National Park. Growth rates of P. contorta, and levels of infection and impact of dwarf mistletoe (Arceuthobium americanu1r) on growth of P. contorta individuals are compared among communities. Vegetation description is based on...
Resource Type:: Masters Thesis

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Creator:: Gisler, Steven D.
Abstract:: In addition to its longstanding recognition as an influential evolutionary process, interspecific hybridization is increasingly regarded as a potential threat to the genetic integrity and survival of rare plant species, manifested through gamete wasting, increased pest and disease pressures, outbreeding depression, competitive exclusion, and genetic assimilation. Alternatively, hybridization has also...
Resource Type:: Masters Thesis
Full Text:: and genus. Results show S. nelsoniana is reproductively isolated from all three of its congeners by a

Occurrence, transmission, and properties of strains of cucumber mosaic virus that are seed-transmitted in Phaseolus vulgaris

Creator:: Davis, Robert Francis
Abstract:: A survey of major bean (Phaseolus vulgaris) breeding programs and seed producing areas in Idaho, Washington, and Oregon was conducted to determine the occurrence of cucumber mosaic virus (CMV), recently reported to be seedborne in beans. Some 259 plants, sampled from breeding lines of diverse germplasm, were found by enzyme-linked...
Resource Type:: Dissertation
Full Text:: Robert F. Davis for the degree of Doctor of Philosophy in Botany and Plant Pathology (Plant Virology

Reproduction, demography, and habitat characterization of Astragalus peckii (Fabaceae), a rare central Oregon endemic

Creator:: Martin, Elizabeth F.
Abstract:: With little previous research on Astragalus peckii (Fabaceae), a state-listed Threatened species in Oregon, I investigated three facets of its biology which are integral to the conservation and management of the species. First, a four-year demographic study of two large populations revealed increasing population growth at one site (Chiloquin) and...
Resource Type:: Dissertation
Full Text:: : ______________________________________ Robert J. Meinke With little previous research on Astragalus peckii (Fabaceae), a state

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:: : _____________________________________________________________________ Robert R. Martin The United States is the third-largest producer of raspberries in the

The application of mathematical models in the epidemiology of foot rot of wheat caused by Cercosporella herpotrichoides Fron.

Creator:: McCoy, Mary Lois
Resource Type:: Dissertation
Full Text:: BY CERCOSPORELLA HERPOTRICHOIDES FRON Abstract approved: Redacted for Privacy Robert L. Powelson

Conservation of Oenothera wolfii (Onagraceae) : introducing a threatened plant into two protected locations in Oregon

Creator:: Currin, Rebecca E.
Abstract:: The showy biennial to short-lived perennial Oenothera wolfii (Munz) Raven, Dietrich & Stubbe (Wolf’s evening primrose) occurs in only a small number of isolated populations on the southern Oregon and northern California coast. This rare species is currently listed as Threatened in Oregon, and is considered a Species of Concern...
Resource Type:: Masters Thesis
Full Text:: _____________________________________________________________________ Robert J. Meinke The showy biennial to short-lived perennial Oenothera wolfii (Munz

ScholarsArchive@OSU

Localization of sulfated polysaccharides in Fucus embryos

Etiological studies on foot rot of wheat caused by Cercosporella herpotrichoides Fron.

Serpentine and non-serpentine edaphic ecology and the recovery of Lomatium cookii (Apiaceae), an endangered endemic of southwest Oregon

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Occurrence, transmission, and properties of strains of cucumber mosaic virus that are seed-transmitted in Phaseolus vulgaris

Reproduction, demography, and habitat characterization of Astragalus peckii (Fabaceae), a rare central Oregon endemic

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'

The application of mathematical models in the epidemiology of foot rot of wheat caused by Cercosporella herpotrichoides Fron.

Conservation of Oenothera wolfii (Onagraceae) : introducing a threatened plant into two protected locations in Oregon

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