Index Catalog // ScholarsArchive@OSU

The ecology and reproduction of Sophora leachiana Peck (Fabaceae)

Creator:: Crowder, Cheryl Alison
Abstract:: The goal of the study was to collect data on the ecology and reproduction of Sophora leachiana in order to help explain the rarity and restricted range of this species. There are 13 known populations of S. leachiana, occurring in a 29 by 6.4 km area in the Siskiyou Mountains...
Resource Type:: Masters Thesis
Full Text:: (Fabaceae) AN ABSTRACT OF THE THESIS OF CHERYL ALISON CROWDER for the degree of MASTER OF SCIENCE in

The development and maturation of the Elaiosome of Dicentra formosa (Andr.) Walp

Creator:: Barnes, April E. Hootman
Abstract:: The developmental cytology of the elaiosome of Dicentra formosa (Andr.)Walp. was investigated from the time of initial differentiation until complete maturation. Light and transmission electron microscopy studies showed that the elaiosome becomes differentiated from epidermal tissue in the prefertilized ovule. At this time the cells are characterized by their large...
Resource Type:: Masters Thesis
Full Text:: Dicentra formosa (Andr.) Walp AN ABSTRACT OF THE THESIS OF APRIL E. HOOTMAN BARNES for the degree of

West Eugene Native Wetland Restoration Research Project: Seed Dormancy, Germination, and Establishment

Creator:: Wilson, Mark V., Ingersoll, Cheryl A., and Clark, Deborah Louise, 1950-
Abstract:: Seed size, abundance, viability, dormancy, and germination requirements strongly influence plant establishment and therefore are important considerations in restoration of native vegetation. These characteristics provide criteria for selection of suitable species, development of collection and pretreatment methods, and determination of seeding densities. The first set of objectives of this study...
Resource Type:: Technical Report
Full Text:: Mark V. Wilson, Cheryl A. IngersolIr. and Deborah L. Clark Oregon State University Corvallis, Oregon

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

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

Why pest plant control and native plant establishment failed : a restoration autopsy

Creator:: Wilson, Mark V., Ingersoll, Cheryl A., Clark, Deborah Louise, 1950-, and Wilson, Mark G.
Abstract:: Explaining restoration failure can be as important as touting success. We used a series of studies to understand the failure of techniques commonly used to restore wetland prairies in the Willamette Valley of western Oregon. Burning, fallowing, and solarization (covering tilled plots with plastic sheeting to heat the soil) had...
Resource Type:: Article
Full Text:: Control and Native Plant Establishment Failed: A Restoration Autopsy Mark V. Wilson1 Cheryl A

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:: Localization of Neotropical Tree Species Cedrela odorata L. (Meliaceae) Abstract approved

Factors affecting development of iris rhizome rot caused by Botrytis convoluta Whetzel and Drayton

Creator:: Maas, J. L.
Abstract:: Abundant conidial and sclerotial production occurs on iris plants infected with Botrytis convoluta Whetzel and Drayton during the cool moist months of the year. Experiments were designed to study the survival and inoculum potential of conidia and sclerotia. Basic nutritional requirements of the fungus in culture were also studied. Results...
Resource Type:: Dissertation
Full Text:: DRAYTON Abstract approved: Robert L. Powelson Abundant conidial and sclerotial production occurs on

Susceptibility of coast redwood seedlings to Phytophthora ramorum

Creator:: Lucas, Sunny L.
Abstract:: Coast redwood (Sequoia sempervirens) (D. Don) Endl. is a host for Phytophthora ramorum but it was unclear if the pathogen represents a significant disease risk to this tree species. In this study the susceptibility of coast redwood seedlings and the likelihood of sporulation on redwood were examined. Two methods were...
Resource Type:: Masters Thesis
Full Text:: Sunny L. Lucas for the degree of Master of Science in Botany and Plant Pathology presented on March 18

Potential susceptibility of tanoak associated and rare ericaceous plant species of southwestern Oregon to Phytophthora ramorum

Creator:: Zanzot, James W.
Abstract:: The sudden oak death pathogen, Phytophthora ramorum, is present in southwestern Oregon, and while an eradication effort is underway, the potential impact of the polyphagous pathogen on surrounding vegetation is unknown. Plant communities in the area are substantially different from those affected in California, although tanoak (Lithocarpus densiflorus), evergreen huckleberry...
Resource Type:: Masters Thesis
Full Text:: ramorum Abstract approved: Jennifer L. Parke The sudden oak death pathogen, Phytophthora ramorum, is

ScholarsArchive@OSU

The ecology and reproduction of Sophora leachiana Peck (Fabaceae)

The development and maturation of the Elaiosome of Dicentra formosa (Andr.) Walp

West Eugene Native Wetland Restoration Research Project: Seed Dormancy, Germination, and Establishment

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

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

Why pest plant control and native plant establishment failed : a restoration autopsy

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

Factors affecting development of iris rhizome rot caused by Botrytis convoluta Whetzel and Drayton

Susceptibility of coast redwood seedlings to Phytophthora ramorum

Potential susceptibility of tanoak associated and rare ericaceous plant species of southwestern Oregon to Phytophthora ramorum

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