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Filtering by: Creator Washington, Betsy B. Remove constraint Creator: Washington, Betsy B. Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Degree Field Plant Pathology Remove constraint Degree Field: Plant Pathology

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The possibility of inter-transmission of tulip mosaic and iris mosaic by insect vectors, especially aphids

Creator:

Whitaker, William Carey

Resource Type:

Masters Thesis

Full Text:

. ACIO\1DGLtNT S. I wish to express my sincere appreciation to Lir. i'«i. B. McKay, formerly Plant
Chemical control of hop downy mildew (Pseudoperonospora humuli) and tolerance by Phytophthora isolates to the systemic fungicide metalaxyl

Creator:

Hunger, Robert Marvin

Resource Type:

Dissertation

Full Text:

, Washington. 2 OSU = P. B. Hamm, Oregon State University. 3 D. P. Maxwell, University of Wisconsin, Madison
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:

Weyerhaeuser Nursery in Centralia, Washington for providing a large portion of the Pacific yew seedlings
Partial characterization of the P4 pathotype of pea seedborne mosaic virus

Creator:

Kohnen, Paul D.

Abstract:

Biological, serological, and molecular characteristics of the P4 pathotype of pea seedborne mosaic potyvirus (PSbMV) were investigated. The characterization allowed P4 to be differentiated from other pathotypes of the same virus. P4 was distinguished from P1 on the basis of host symptomatology. It induced varied, but often distinctive symptoms in...

Resource Type:

Dissertation

Full Text:

P 1 B 1 2 2 3 + 3 1 4 2 5 3 6 4 + C 1 + H 1 2 2 3 + 3 4 5 6 D 1 2 + Totals: 42/42 12/42 3 100
Studies of yellow rust of Rubus

Creator:

Lund, Walter Thomas

Resource Type:

Masters Thesis

Full Text:

Washington. (16) The disease is reported as gener1 in northern Europe and extends south into Italy. It is
Evolution and ecology of the Ceanothus-Frankia symbiosis

Creator:

Jeong, Soon-Chun

Abstract:

The evolutionary relationship between Frankia and actinorhizal plants was evaluated by reconstructing molecular phylogenetic trees from nifH, 16S rDNA, and rbcL nucleotide sequences. Subgroupings in Frankia phylogenetic trees reconstructed from nifH and from 16S rDNA sequences were consistent in terms of plant origins of Frankia strains. Although the branching order...

Resource Type:

Dissertation

Full Text:

gel patterns of BOX PCR(panel A) and DR PCR (panel B) products from six nodules collected from three
Studies of the crinkle disease of strawberry, with special reference to its transmission

Creator:

Vaughan, Edward Kemp

Resource Type:

Masters Thesis

Full Text:

healthy. TRA.NSIflSSIO BY I2CHANICAL MEJTS Mr. B. F. Dana, Plant Pathologist, U. S. D. A., cooperating

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Academic Affiliation

Botany and Plant Pathology[remove]7

Advisor

Zeller, S. M.2
Hampton, Richard O.1
Hansen, Everett M.1
Horner, Chester E.1
Mcwhorter, Frank P.1
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1931 to 1998

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Committee Member

Allen, T. C.1
Arp, Daniel J.1
Breen, Patrick1
Daeschel, Mark1
Ferro, A. J.1
more Committee Members »

Creator

Hunger, Robert Marvin1
Jeong, Soon Chun1
Kohnen, Paul D.1
Lund, Walter Thomas1
Murray, Marion S.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1931 to 1997

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Decade

1990-19993
1980-19891
1930-19393

Degree Field

Plant Pathology[remove]7

Degree Level

Master's4
Doctoral3

Degree Name

Master of Science (M.S.)4
Doctor of Philosophy (Ph.D.)3

Language

English [eng]7

Non-Academic Affiliation

Oregon State University. Graduate School7

Peer Reviewed

No7

Resource Type

Masters Thesis4
Dissertation3

Rights Statement

Copyright Not Evaluated6
In Copyright1

Subject

Mosaic diseases2
Actinorhizas1
Aphididae as carriers of disease1
Ceanothus -- Ecology1
Ceanothus -- Evolution1
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