Index Catalog // ScholarsArchive@OSU

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Creator:: Imper, David Kimberly
Abstract:: Twelve plots at six sites in southwestern Oregon were studied to determine the degree to which various soil characteristics are related to the occurrence and growth of Chamaecyparis lawsoniana and Thuja plicata. Soil profiles and vegetation were described in each plot, and measurements were made of insolation, soil and litter...
Resource Type:: Masters Thesis
Full Text:: several people within the Department, including Don Armstrong, Gene Newcomb, Ed Trione, and Fred Rickson

Production dynamics of a Zostera marina L. bed in Netarts Bay, Oregon

Creator:: Kentula, Mary E.
Resource Type:: Dissertation
Full Text:: laboratory during the course of the study. He and Dr. Donald J. Armstrong helped me sort through the tangles

Invasion by trees into a grassy bald on Marys Peak, Oregon Coast Range

Creator:: Magee, Teresa K.
Abstract:: Grassy balds are meadows that occur on or near the summits of montane peaks and ridges. The sites on which balds are located generally fall within the climatic tolerance ranges of associated tree species. This study evaluates the stability of a forest-meadow transition zone of such a bald on Marys...
Resource Type:: Masters Thesis
Full Text:: with numerous departmental and graduate school rules, and to Dr. Donald Armstrong and Mark Chatfield

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Creator:: Marsden, Katherine E.
Abstract:: The effects of five cytokinin antagonists on the growth of cytokinin-autonomous lines of Phaseolus lunatus cv. Kingston, Phaseolus vulgaris cv. Great Northern, and Nicotiana tabacum cv. Wisconsin 38 callus tissues have been compared. The antagonists tested included four N⁴-substituted 4-amino-2-methylthiopyrrolo[2,3-d]pyrimidines bearing the following N⁴ side chains, 4-n-pentyl- (ms²pnN⁴Prp), 4-n-hexyl- (ms²HxN⁴Prp),...
Resource Type:: Masters Thesis
Full Text:: . Donald J. Armstrong for his help and guidance during my graduate study. His encouragement, patience, and

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

Creator:: Chatfield, J. Mark
Abstract:: Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv. Great Northern has been examined using an assay based on the oxidation of radioactively labeled N⁶ -(Δ² -isopentenyl) adenine (i⁶Ade) to adenine (Ade). Conditions for the quantitative extraction and assay of the enzyme have been established. The substrate specificity...
Resource Type:: Dissertation
Full Text:: Privacy Donald J. Armstrong Cytokinin oxidase activity in callus tissues of Phaseolus vulgaris L. cv

Reevaluation of systematic relationships in Triticum L. and Aegilops L. based on comparative morphological and anatomical investigations of dispersal mechanisms

Creator:: Morrison, Laura A.
Abstract:: Comparative morphological and anatomical studies of the dispersal mechanisms characterizing the wheat complex (Triticum L. and Aegilops L.) have documented patterns of adaptive radiation which may have significance for evolutionary relationships. These patterns, which form an array of diverse types of diaspores among the diploid taxa, appear conceptually to have...
Resource Type:: Dissertation
Full Text:: two international conferences; and to Lynda M. Ciuffetti and Donald J. Armstrong (Department of

Expression of a group 3 LEA protein during maturation of Zea mays L. embryos

Creator:: Thomann, Estela B.
Resource Type:: Masters Thesis
Full Text:: appreciation to my major professor, Dr. Carol Rivin, for her support, and to Drs Donald Armstrong, Machteld

Auxin and cytokinin interaction in tomato (Lycopersicon esculentum Mill.)

Creator:: Coenen, Catharina
Abstract:: The phytohormones auxin and cytokinin control plant development through a complex network of interactions which include synergistic, additive, and opposite effects whose mechanisms are unknown. The auxin-insensitive diageotropica (dgt) mutant provided a tool to dissect the relationship between auxin- and cytokinin-induced responses in tomato. Morphological, physiological, and molecular data support...
Resource Type:: Dissertation
Full Text:: abilities. I thank the members of my committee, Carol Rivin, Don Armstrong, Machteld Mok, Paul Farber, and

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Creator:: Holub, Scott M.
Abstract:: Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...
Resource Type:: Dissertation
Full Text:: , Art McKee, S. Michal Jazwinski, Yuriko Yano, Teresa Sawyer, Steve Perakis, Donald Armstrong, Charlie

Characterization of the molecular foundations and biochemistry of alkane and ether oxidation in a filamentous fungus, a Graphium species.

Creator:: Skinner, Kristin M.
Abstract:: Graphium sp., a eukaryotic alkanotroph, is able to oxidize small-molecular weight gaseous n-alkanes, diethyl ether and the branched ether, methyl tert butyl ether (MTBE). However, information regarding the biochemistry of fungal-mediated alkane and ether metabolism is limited, and questions regarding the identity of alkane oxidation catalysts and the genetic underpinnings...
Resource Type:: Dissertation
Full Text:: . Don Armstrong for sharing his love of science, his humor and his tolerance. I extend my

ScholarsArchive@OSU

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Production dynamics of a Zostera marina L. bed in Netarts Bay, Oregon

Invasion by trees into a grassy bald on Marys Peak, Oregon Coast Range

Cytokinin antagonists and antibiotics related to nalidixic acid : effects on Phaseolus and Nicotiana callus tissues

Cytokinin oxidase activity from Phaseolus vulgaris L. cv. Great Northern callus tissues

Reevaluation of systematic relationships in Triticum L. and Aegilops L. based on comparative morphological and anatomical investigations of dispersal mechanisms

Expression of a group 3 LEA protein during maturation of Zea mays L. embryos

Auxin and cytokinin interaction in tomato (Lycopersicon esculentum Mill.)

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Characterization of the molecular foundations and biochemistry of alkane and ether oxidation in a filamentous fungus, a Graphium species.

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