Index Catalog // ScholarsArchive@OSU

Interactions between pea seed-borne mosaic virus pathotype 1 and Pisum sativum resistance gene sbm-1

Creator:: Keller, Karen E.
Abstract:: Pea seed-borne mosaic potyvirus pathotype 1 (PSbMV-P1) has the ability to infect most genotypes of Pisum sativum. The exception are those genotypes that are homozygous recessive for the sbm-1 gene. The life cycle of PSbMV pathotype 4 (PSbMV-P4) is unaffected by the sbm-1/sbm-1 genotype. Infectious clones of Pl-P4 recombinants were...
Resource Type:: Masters Thesis
Full Text:: and Pisum sativum resistance gene sbm-1 AN ABSTRACT OF THE THESIS OF Karen E. Keller for the

Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

Creator:: Bledsoe, Karen E.
Abstract:: This work was performed on Trillium albidum Freeman (Liliaceae), to clarify the pattern of morphological variation between the small-flowered populations at the northern limit of its range ( T. parviflorum Soukup) and the larger-flowered populations from southern Oregon and northern California. It was hypothesized that only a single species of...
Resource Type:: Masters Thesis
Full Text:: albidum Freeman (Liliaceae) AN ABSTRACT OF THE THESIS OF Karen E. Bledsoe for the degree of Master of

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:: Karen A. Garrett for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

Annual cycles of ecological disturbance and recovery underlying the subarctic Atlantic spring plankton bloom

Creator:: Behrenfeld, Michael J., Doney, Scott C., Lima, Ivan, Boss, Emmanuel S., and Siegel, David A.
Abstract:: Satellite measurements allow global assessments of phytoplankton concentrations and, from observed temporal changes in biomass, direct access to net biomass accumulation rates (r). For the subarctic Atlantic basin, analysis of annual cycles in r reveals that initiation of the annual blooming phase does not occur in spring after stratification surpasses...
Resource Type:: Article
Full Text:: Ivan Lima,2 Emmanuel S. Boss,3 and David A. Siegel 4 Received 27 November 2012; revised 1 April 2013

Demography and Reproduction of Erigeron decumbens var. decumbens, 1993-1994 Field Studies

Creator:: Ingersoll, Cheryl A., Finley, Karen K., and Clark, Deborah Louise, 1950-
Abstract:: Erigeron decumbens var. decumbens, the Willamette Daisy, is endemic to the Willamette Valley of Oregon. This taxon is a Category 1 Candidate for listing under the federal Endangered Species Act (U.S. Fish and Wildlife Service 1990) and is listed as Endangered under Oregon state law. Herbarium records indicate that E....
Resource Type:: Technical Report
Full Text:: . DECUMBENS, 1993-1994 FIELD STUDIES Prepared by Dr. Cheryl A. Ingersoll Karen K. Finley Deborah L. Clark

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

Creator:: Kentnesse, Laura E.
Abstract:: Rare plant reintroductions are a critical conservation tool for the augmentation of diminishing populations, or re-establishment of extirpated populations. Analysis of reintroduction failures suggests that a sophisticated understanding of species biology, ecology, and habitat is essential for producing self-sustaining rare plant populations. This study sought to generate that background knowledge...
Resource Type:: Masters Thesis
Full Text:: THE THESIS OF Laura E. Kentnesse for the degree of Master of Science in Botany and Plant Pathology

The life history of Anisogramma anomala (Pk.) E. Müller (Diaporthaceae) and its pathological and epidemiological association with Corylus avellana L.

Creator:: Gottwald, Timothy Ross
Abstract:: Eastern Filbert Blight, caused by Anisogramma anomala (Peck) E. Miller, was first discovered in the Pacific Northwest in 1974. Orchard experiments suggest that the fungus completes its life cycle in two years. Infection takes place from mid-January to May, mainly through mite-galled-buds infested with an Eriophyid mite, Phytocoptella avellanae Nal....
Resource Type:: Dissertation
Full Text:: The life history of Anisogramma anomala (Pk.) E. Müller

Regeneration biology of Erigeron decumbens var. decumbens, an endangered plant of the Willamette Valley

Creator:: Clark, Deborah Louise, 1950-, Finley, Karen K., and Ingersoll, Cheryl A.
Abstract:: Erigeron decumbens var. decumbens, the Willamette daisy, is known only from the Willamette Valley of Oregon. Herbarium records, from the 1800's until 1934, indicate that the Willamette daisy was once common and widely distributed throughout the Willamette Valley (Clark et al. 1993). However, between 1934 and 1980, this taxon was...
Resource Type:: Technical Report
Full Text:: , AN ENDANGERED PLANT OF THE WILLAMETTE VALLEY Prepared by Deborah L. Clark Karen K. Finley Dr

Regional to global assessments of phytoplankton dynamics from the SeaWiFS mission

Creator:: Siegel, D. A., Behrenfeld, Michael J., Maritorena, S., McClain, C. R., Antoine, D., Bailey, S. W., Bontempi, P. S., Boss, E. S., Dierssen, H. M., Doney, S. C., Eplee, R. E. Jr., Evans, R. H., Feldman, G. C., Fields, E., Franz, B. A., Kuring, N. A., Mengelt, C., Nelson, N. B., Patt, F. S., Robinson, W. D., Sarmiento, J. L., Swan, C. M., Werdell, P. J., Westberry, T. K., Wilding, J. G., and Yoder, J. A.
Abstract:: Photosynthetic production of organic matter by microscopic oceanic phytoplankton fuels ocean ecosystems and contributes roughly half of the Earth's net primary production. For 13 years, the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) mission provided the first consistent, synoptic observations of global ocean ecosystems. Changes in the surface chlorophyll concentration, the primary...
Resource Type:: Article
Full Text:: , USA ⁎ Corresponding author. Tel.: +1 805 893 4547. E-mail address: davey@eri.ucsb.edu (D.A. Siegel

Distribution of Acremonium coenophialum in developing seedlings and inflorescences of Festuca arundinacea

Creator:: Cook, Kathy L.
Abstract:: Acremonium coenophialum is an endophytic fungus which infects the reproductive and vegetative tissue of tall fescue. Interest in this fungus was sparked by research which linked its presence in tall fescue with reduced weight gains and alkaloid-like poisoning in cattle. Incomplete information was available on the endophyte's life or disease...
Resource Type:: Masters Thesis
Full Text:: (Siegel et al., 1984). A tall fescue endophyte was first described in 1941 (Neill, 1941) and it has been

ScholarsArchive@OSU

Interactions between pea seed-borne mosaic virus pathotype 1 and Pisum sativum resistance gene sbm-1

Morphological and cytological variation in Trillium albidum Freeman (Liliaceae)

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

Annual cycles of ecological disturbance and recovery underlying the subarctic Atlantic spring plankton bloom

Demography and Reproduction of Erigeron decumbens var. decumbens, 1993-1994 Field Studies

Conservation of Rorippa columbiae : an evaluation of reintroduction potential through the study of germination ecology, propagation methods, and habitat requirements

The life history of Anisogramma anomala (Pk.) E. Müller (Diaporthaceae) and its pathological and epidemiological association with Corylus avellana L.

Regeneration biology of Erigeron decumbens var. decumbens, an endangered plant of the Willamette Valley

Regional to global assessments of phytoplankton dynamics from the SeaWiFS mission

Distribution of Acremonium coenophialum in developing seedlings and inflorescences of Festuca arundinacea

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