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Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

Creator:: Johnson, Earl Ray
Abstract:: Benomyl-tolerant Botrytis cinerea was found in snap bean fields throughout the Willamette Valley while no tolerant isolates of Whetzelinia sclerotiorum were detected. Thirty-five benomyl-tolerant isolates of B. cinerea had slower radial growth rates than eighteen benomyl-sensitive isolates. Sporulation of an aggressive tolerant isolate was not stimulated when grown on benomyl-treated...
Resource Type:: Masters Thesis
Full Text:: Stayton, Oregon (Johnson, M. S. Thesis). Thus, it is unlikely that the increase of benomyl-tolerant

Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Creator:: Gratkowski, H.
Resource Type:: Dissertation
Full Text:: VBLUTINPS VAR. LAEVIGATtJS T. & G. by HENRY JOHN GRATKOWSKI A THESIS submitted to OREGON STATE UNI

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Creator:: Tkacz, Borys M.
Abstract:: Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) caused by the fungus Phellinus weirii (Murr.)Gilbertson was studied in two successive stands in the Oregon Coast Range. Damage due to the disease in a 60-year-old second-growth stand was compared with incidence in the preceding 300-year-old stand on the same site....
Resource Type:: Masters Thesis
Full Text:: for Privacy Everett M. Hansen Laminated root rot of Douglas-fir (Pseudotsuga menziesii (Mirb

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:: Reynolds, Keith M.
Abstract:: Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...
Resource Type:: Masters Thesis
Full Text:: PHELLINUS WEIRII IN YOUNG-GROWTH DOUGLAS-FIR Abstract approved: Redacted for Privacy tverett M. Hansen

Morphological variation, taxonomy, and host specificity of Phytophthora megasperma

Creator:: Hamm, Philip B.
Resource Type:: Masters Thesis
Full Text:: HOST SPECIFICITY OF PHYTOPHTHORA MEGASPERMA Abstract approved: Redacted for privacy Everett M. Hansen

Factors affecting germination of endomycorrhizal spores

Creator:: Daniels, Barbara Ann
Abstract:: Four isolates of Glomus mosseae, collected from diverse geographic locations, were pot cultured on varied host plants or stored in the same soil as collected. Spores of three isolates failed to germinate on any of five agar media while the fourth germinated well on all media. Lack of germination on...
Resource Type:: Dissertation
Full Text:: specially thank my advisor, Dr. James M. Trappe for his patience and guidance throughout my Ph. D. program

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

Creator:: Alsheikh, Abdulmagid M.
Abstract:: Mycorrhizal fungi are important in food production of arid lands. The desert truffles not only form a symbiotic association with range plants but also form fruiting bodies which are both prized as food and nutritious. The taxonomy and ecology of two genera of desert truffles are treated in this thesis....
Resource Type:: Masters Thesis
Full Text:: Tirmania AN ABSTRACT OF THE THESIS OF Abdulmagid M. Alsheikh for the degree of Master of Science in

Grazer-periphyton interactions in laboratory streams

Creator:: Sumner, William T.
Resource Type:: Masters Thesis
Full Text:: coastal valleys of Oregon, were stocked at two densities, 125 m-2 and 500 m-2 , under condi- tions of

Contributions to the plant ecology of the Oregon coastal sand dunes

Creator:: Wiedemann, Alfred M.
Abstract:: Sand dunes are found along the coasts of most of the large land masses of the world. Because of their proximity to man and his activities, the maritime sand dunes of Europe, particularly Germany, France, Holland and Scandinavia, have the longest history of stabilization activities and botanical investigation. There are...
Resource Type:: Dissertation
Full Text:: SL T 2. Newport. Aerial photographs showing vegetation 171 development. Newport. View of deflation

The effects of ozone on the growth, rhizosphere population dynamics, and mycorrhizal colonization of wheat

Creator:: Kimball, Shannon M.
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Shannon M. Kimball for the degree

ScholarsArchive@OSU

Development and control of benomyl-tolerant Botrytis cinerea strains on snap beans (Phaseolus vulgaris)

Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Comparison of Phellinus weirdi root rot damage in a 60-year-old Douglas-fir (Pseudotsuga menziesii) stand with the damage in the preceding old-growth stand

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Morphological variation, taxonomy, and host specificity of Phytophthora megasperma

Factors affecting germination of endomycorrhizal spores

Taxonomy of desert truffles : the genera Phaeangium and Tirmania

Grazer-periphyton interactions in laboratory streams

Contributions to the plant ecology of the Oregon coastal sand dunes

The effects of ozone on the growth, rhizosphere population dynamics, and mycorrhizal colonization of wheat

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