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Filtering by: Decade 1980-1989 Remove constraint Decade: 1980-1989 Degree Field Botany and Plant Pathology Remove constraint Degree Field: Botany and Plant Pathology Resource Type Dissertation Remove constraint Resource Type: Dissertation

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Twenty-one years of secondary succession in Pseudotsuga forests of the western Cascade Range, Oregon

Creator:

Halpern, Charles B.

Resource Type:

Dissertation
The structure and dynamics of old-growth Sitka spruce (Picea sitchensis) forest of the Oregon Coast Range

Creator:

Quaye, Eric Charles

Abstract:

The objectives of this study are to: 1) study the variations among stands of old-growth Sitka spruce forest located within a relatively restricted geographical area, 2) determine the relationship between species distribution, vegetational pattern, and such site factors as slope and aspect, and 3) ascertain the abruptness of phytosociological change...

Resource Type:

Dissertation
The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Creator:

Nielsen, Gary R. (Gary Richard), 1956-

Resource Type:

Dissertation
The effects of abscisic acid on gene expression during wheat germination

Creator:

Ballo, Barbara

Abstract:

Germination of immature (Stage III) and mature (Stage V) wheat (Triticum aestivum L. var. Chinese Spring and Yamhill) embryos is prevented by the inclusion of 10⁻⁴ M abscisic acid (ABA) in culture medium. In addition, Stage III embryos develop into mature embryos in culture medium containing ABA. In the absence...

Resource Type:

Dissertation
The effects of abscisic acid on gene expression during embryogenesis in wheat

Creator:

Williamson, John D. (John David), 1948-

Resource Type:

Dissertation
The disease cycle of side rot of pear, caused by Phialophora malorum

Creator:

Sugar, David

Abstract:

Potential sources of inoculum of Phialophora malorum were investigated. P. malorum was found to be a soil-borne fungus whose role as a postharvest pathogen of pear is dependent upon passive dispersal with infested soil. P. malorum survived in soil under a wide range of conditions, with greatest survival in cool,...

Resource Type:

Dissertation
Synthesis and assembly of Fucus zygote cell walls with an emphasis on alignate and fucans

Creator:

Doubet, Scott

Abstract:

Fucus distichus L. Powell zygotes were used to investigate cell wall synthesis and development and to construct a model of cell wall structure. Alginate synthesis was investigated. Zygotes were cultured in seawater containing ¹⁴C-bicarbonate. Alginate represented 12%, 37%, and 1.7% of the label recovered from whole zygotes, wall, and cytoplasm,...

Resource Type:

Dissertation
Suppression of take-all [Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker] of wheat (Triticum aestivum L.) by banded ammonium and chloride fertilizers

Creator:

Halsey, Mark Evan

Resource Type:

Dissertation
Soil fungal hyphal dynamics and seasonal hypogeous sporocarp production in western Oregon Douglas-fir forests

Creator:

Hunt, Gary, 1945-

Abstract:

Total length and biomass of fungal mycelium in the soil of a young Douglas-fir stand in the central Oregon Coast Range were estimated over 27 months with the agar-film technique. In a second study, phenology and taxonomy of hypogeous (belowground) sporocarps were studied over 32 months in a nearby, young...

Resource Type:

Dissertation
Serological identification of common and strain-specific antigens in Agrobacterium

Creator:

Bouzar, Hacene

Abstract:

Two new methods, one of broad specificity and the other of narrow specificity, were developed for the identification of agrobacteria. The former method was based on ribosomal antigens that were common to members of the closely related Agrobacterium and Rhizobium genera. Antisera to unwashed 50 S ribosomal subunits from five...

Resource Type:

Dissertation

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Academic Affiliation

Botany and Plant Pathology51
Forest Science1

Advisor

Franklin, Jerry F.6
Trappe, James M.5
Linderman, Robert G.3
Mcintire, C. David3
Mills, Dallice I.3
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1981 to 1990

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Committee Member

Bottomley, Peter3
Moore, Larry3
Pearson, George3
Quatrano, Ralph3
Armstrong, Don2
more Committee Members »

Creator

Alvarez, Isabel Fernandez1
Angwin, Peter A.1
Antos, Joseph A.1
Apple, Jeanne Debons1
Ballo, Barbara1
more Creators »

Date

Date range begin – Date range end

Current results range from 1980 to 1989

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Decade

1980-1989[remove]51

Degree Field

Botany and Plant Pathology[remove]51
Forest Science1

Degree Level

Doctoral51

Degree Name

Doctor of Philosophy (Ph.D.)51

File Format

application/pdf2

Language

English [eng]51

Non-Academic Affiliation

Oregon State University. Graduate School51

Peer Reviewed

No48

Resource Type

Dissertation[remove]51

Rights Statement

Copyright Not Evaluated50
In Copyright1

Subject

Mycorrhizas4
Abscisic acid2
Douglas fir2
Plant viruses2
Take-all disease2
more Subjects »

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