Index Catalog // ScholarsArchive@OSU

Seed and seedling ecology of Artemisia tridentata in a restoration context

Creator:: Wijayratne, Upekala C.
Abstract:: The semi-arid sagebrush steppe ecosystem is one of the largest biomes in North America. The steppe provides critical habitat and forage for wildlife and is economically important to recreation and livestock industries. However, the ecosystem is threatened primarily due to several negative effects associated with expansion of the exotic annual...
Resource Type:: Dissertation
Full Text:: . Seed and Seedling Ecology of Artemisia tridentata in a Restoration Context by Upekala C

Factors influencing the effects of host diversity on plant disease epidemics for wheat stripe rust and potato late blight

Creator:: Garrett, Karen A.
Abstract:: Most studies of plant disease epidemiology have focused on epidemics in host populations composed of a single genotype. But crop plant diversity can be a useful means of improving the deployment of resistance genes. In a series of experiments with wheat stripe rust and potato late blight, we studied factors...
Resource Type:: Dissertation
Full Text:: good adventures. * Thanks to J. Brunet, C. Cowger, D. 1. Coyle, M. E. Daub, A. M. Jarosz, R. J

Effects of substrate relief, light intensity and herbivory on the distribution and abundance of periphyton in laboratory streams

Creator:: DeNicola, Dean M.
Resource Type:: Dissertation
Full Text:: oregona and §tiwclonium tenue. a) Top substrates a 20 uE m-4 s- I. b) Recessed sub§traes at 20 uE m4 sL. c

Comparative gibberellin relationships in tall and dwarf peas (Pisum sativum L.)

Creator:: Anderson, James David
Abstract:: Experiments were performed to determine whether a direct correlation exists between the growth rates of tall and dwarf peas grown either in the light or in the dark and endogenous gibberellin (GA) content. Three separate but related experimental approaches were utilized: (1) the determination of possible qualitative and /or quantitative...
Resource Type:: Dissertation
Full Text:: Abstract approved: Thomas C. Moore Experiments were performed to determine whether a direct

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

Creator:: Bippus, Alexander C.
Abstract:: Mosses (Phylum Bryophyta) are widely considered to be among the most ancient groups of land plants (embryophytes) and they are the second most speciose embryophyte phylum with ~13,000 extant species. Despite their diversity and antiquity, mosses have a limited fossil record, which primarily consists of gametophytes entombed in Cenozoic amber....
Resource Type:: Dissertation
Full Text:: Vancouver Island. American Journal of Botany 104: 584–597. Bippus, A. C., R. Mindell, G. W. Rothwell, and

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

Creator:: Kentula, Mary E.
Resource Type:: Dissertation
Full Text:: Dynamics of a Zostera marina L. Bed in Netarts Bay, Oregon Abstract Approved: C. David Mclntire This

Ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae)

Creator:: Campanella, Donald M.
Abstract:: A study consisting of three parts was undertaken to investigate how variation in species interactions, population genetic structure, epidemiological parameters, and plant breeding system may influence the ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae). Interactions between natural enemy species may modify their net effect on...
Resource Type:: Dissertation
Full Text:: : _______________________________ ______________________________ Peter B. McEvoy Christopher C. Mundt A study

Genomic Investigations of Diversity within the Milkweed Genus Asclepias, at Multiple Scales

Creator:: Weitemier, Kevin A.
Abstract:: At a time when the biodiversity on Earth is being rapidly lost, new technologies and methods in genomic analysis are fortunately allowing scientists to catalog and explore the diversity that remains more efficiently and precisely. The studies in this dissertation investigate genomic diversity within the milkweed genus, Asclepias, at multiple...
Resource Type:: Dissertation
Full Text:: here, and it is found to contain all expected forms of phytochromes: A, B, C, and E. A subsequent

Identification and Occurrence of Sweet Cherry (Prunus avium) Virus and Virus-Like Diseases in Various Regions and Orchards of Oregon

Creator:: Reinhold, Lauri A.
Abstract:: There are over 35 known virus and virus-like diseases of sweet cherry (Prunus avium), some with potential to cause severe economic impact by reducing vegetative growth, vigor, and/or quality of fruit. Oregon is the second-ranked state for sweet cherry production in the United States with 13,000 acres and $70.8 million...
Resource Type:: Dissertation
Full Text:: . Mich. Agric. Exp. Stn. Mekuria, T. A., Smith, T. J., Beers, E., Watson, G. W., and Eastwell, K. C

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

Creator:: Finch, Kristen N.
Abstract:: Biodiversity loss is of global concern, and is due in part to deforestation and high consumer demand for wood and wood products. The neotropical tree species Cedrela odorata (“Spanish cedar” or “cedro”) is economically valuable for its wood and faces threats of overexploitation. Due to strong similarities in wood features...
Resource Type:: Dissertation
Full Text:: plant group. Chapter 2 presents a C. odorata leaf transcriptome, chloroplast genome, and a set of

ScholarsArchive@OSU

Seed and seedling ecology of Artemisia tridentata in a restoration context

Factors influencing the effects of host diversity on plant disease epidemics for wheat stripe rust and potato late blight

Effects of substrate relief, light intensity and herbivory on the distribution and abundance of periphyton in laboratory streams

Comparative gibberellin relationships in tall and dwarf peas (Pisum sativum L.)

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

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

Ecology and biological control of an apomictic invasive plant, Chondrilla juncea (Asteraceae)

Genomic Investigations of Diversity within the Milkweed Genus Asclepias, at Multiple Scales

Identification and Occurrence of Sweet Cherry (Prunus avium) Virus and Virus-Like Diseases in Various Regions and Orchards of Oregon

Genomic Resources for Phylogenetics, Species Delimitation, and Geographic Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae)

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