Graduation date: 1993

Wheat production in the Pacific Northwest consists mainly of the soft white wheat market class. Over 80% of this wheat is exported. In recent years there has been an increase in soft white wheat production (due in a large part to improvements in the yielding capabilities of the genotypes grown in the Pacific Northwest). To expand into different commodity markets, it would be desirable to diversify and produce wheat cultivars representing more market classes and product uses. One opportunity would be to develop cultivars representing the Hard Red Winter market class. An effort to breed high yielding, high protein Hard Red Winter wheats is now underway at Oregon State University. This research was conducted to gain a better understanding of the components (genetic and/or environmental) that determine yield and grain protein content of hard red wheat genotypes. There were two general objectives of the research. One was to study the differences in nitrogen assimilation and remobilization in a diverse group of winter wheat genotypes grown in the different agricultural environments of Oregon. The second objective was to determine the efficacy of using "hill plots" (micro-plots) as a planting method to screen for agronomic and nitrogen assimilation traits in geneticly distinct genotypes which may be used as parents in breeding efforts. Results of this study indicate that genetic differences for nitrogen assimilation and remobilization do exist, and improvements in Pacific Northwest hard red wheat genotypes can be made with appropriate selection techniques. Data also indicate that the traditional high protein wheat genotypes (from the U.S. Great Plains) do not show an advantage from a grain protein concentration standpoint when produced in the Pacific Northwest. Additionally, the environment played a critical role in determining expression of harvest index, grain protein concentration, and nitrogen harvest index. Genotype by environment interactions were high, suggesting that zone-specific varieties may need to be developed in order to attain both high grain yields and high grain protein yields. / Graduation date: 1992

The effects of fenamiphos on soil and root populations of Pratylenchus penetrans were evaluated in four red raspberry cv. Willamette fields in Northwestern Oregon. Field 1 was a silty clay loam with 53% organic matter (OM). Field 2 and 3 were silty loam soils with 3.25 and 2.55% OM, respectively and field 4 was a silty clay with 7.1% OM. The nematicide, fenamiphos (10 kg a.i./ha) was applied in broadcast or band treatments on November 15, 1989. Additional plots in field 3, received a band-nematicide treatment on December 28, 1989 to evaluate the effect of application date on the control of P. penetrans in red raspberry. Field 4 had plots in sites with and without grass and weed ground cover in the aisles between raspberry rows to examine effects of ground cover on nematicide efficacy. Nematodes from soil and roots were sampled monthly from all plots in each field from October 1989 to October 1990. Soil populations of P. penetrans sampled within rows decreased between the October and December sampling dates in all four fields. Soil populations in 3 fields increased in density during mid-summer and reached their highest peak in the middle of September. A similar pattern occurred in P. penetrans soil populations from plots with or without ground cover in aisles between rows of raspberry in field 4. However, in this field, numbers increased in July and reached their peak density in August. Root populations of P. penetrans from red raspberry reached their highest number during spring and summer at all fields. No significant (P>0.05) differences in effectiveness of fenamiphos were detected between band and broadcast method of application and, also between the 2 application dates. Seasonal mean densities of soil populations from band application was only significantly lower than in nontreated controls in areas with ground cover in field 4, respectively. High variability in the numbers of P. penetrans in soil and roots of raspberry was observed throughout the year. Therefore, conclusions about the effectiveness of fenamiphos were difficult to assess. The efficiency of Baermann funnels was 43.9%, when a known number of P. penetrans was added to soil. Total yields of P. penetrans extracted from raspberry roots by mist chamber root extraction (MCRE) were higher (P = 0.05) than yields extracted by polyethylene plastic bag root incubation (PBRI). Approximately 90% of the total P. penetrans recovered was achieved after three and seven days of extraction for PBRI and MCRE, respectively. However, the extraction efficiency of MCRE was 30% higher than PBRI and the daily recovery lasted 28 and 18 days, respectively. / Graduation date: 1992

Sequence stratigraphic analysis of the southern Tyee basin, Oregon Coast Range, reveals that the lower to middle Eocene forearc and subduction zone strata comprise four depositional sequences. Sequence I (lower Umpqua Group) represents a partially subducted accretionary wedge. Sequence II (upper Umpqua Group) is a deltaic sequence that filled irregular lows and thinned over submarine highs created by intrabasin, imbricate thrust faulting. Farther north, Sequences I and II rapidly thin and distally onlap oceanic basalt islands and searnounts of the Siletz River Volcanics to form a condensed section and then thicken again northward. These sequences are overlain by a tectonism-forced transgressive systems tract deposited during an onlap caused by tectonic subsidence and dockwise basin rotation approximately 50 Ma. By middle Eocene, sandy submarine fans and wave-dominated deltas of Sequences III and IV (Tyee, Elkton, Bateman, and Spencer formations) prograded northward down the axis of the Tyee forearc basin and across the structural trend of the Umpqua Group. Organic geochemistry indicates that most units are thermally immature and contain lean, gas-prone Type III kerogen. However, some beds (coals) are sufficiently organic-rich to be sources of biogenic and thermogenic methane discovered in numerous seeps. Reservoir-quality porosities and permeabilities are identified in a few delta front and turbidite sandstones of Sequences II and III, although zeolite, clay, and quartz diagenesis has destroyed most potential sandstone reservoirs. The overall hydrocarbon potential of the basin is moderately low. Several requirements f or commercial accumulations of hydrocarbons, however, probably exist locally within and adjacent to the basin. Three speculative petroleum systems are identified. The first includes the southern part of the basin near the border with the Mesozoic Klamath Mountains and is related to a proposed subduction zone maturation mechanism along thrust faults. The second is centered in the northern part of the study area and may be associated with basin-center gas in an overpressured zone. The third occurs near the eastern border of the basin where maturation is related to local heating by sills and migration of hydrothermal fluids associated with mid- Tertiary volcanism in the Western Cascade arc. / Graduation date: 1995

The purpose of this study was to determine if significant relationships exist among terminal values, demographic variables and health care preferences for information and behavioral involvement for graduate students from the People's Republic of China and Taiwan. The Rokeach Value Survey and the Krantz Health Opinion Survey were used to collect data from graduate students at Oregon State University. The data derived from 161 returned questionnaires (91 from the People's Republic of China and 70 from Taiwan) were analyzed using the Mann-Whitney U test, multiple regression, and the t-test. Results showed subjects from the People's Republic of China and Taiwan differed significantly on two terminal values. Students from the People's Republic of China valued more a comfortable life and a world of beauty than the students from Taiwan. The terminal value of health was ranked in the lower half of the 18 terminal values by both groups of students which contradicts the literature. Respondents from the People's Republic of China had a significantly higher preference for information than Taiwan students who had a significantly higher health care preference for active participation and behavioral involvement. Preferences may be related to the political community and institutional differences in the health care delivery in the two countries. The value for an exciting life and use of a community physician or hospital were significant predictors of a health care preference for information. The values a world of beauty and social recognition were significantly related to a health care preference for behavioral involvement. / Graduation date: 1991

Changes to commemorative signage in Port Orford, Oregon, United States, during 1998 and 1999 represent an emerging public acknowledgement of the removal by force of most of the indigenous peoples of Southwestern Oregon in the 1850s. A wide range of participants, including local area residents and nonresident members of Native American First Nations, negotiated changes to signage within a context of controversy. Hegemonic social memory institutionalized as local history and publicly displayed as text on a historical marker was challenged by an alternate version of the event commemorated: a conflict between Athapaskans and Euro- Americans in 1851 at the site now know as "Battle Rock." The alternate version is supported by oral tradition which is marginalized as a source of knowledge about the past while the official history has been privileged by repetitious inscription and incorporated commemorative ritual. Discussion includes the selectivity of public history and the creation of public memory through commemorative activity in which official and vernacular interests compete. A parallel is drawn between the remembrance and acknowledgement of events once suppressed and the remembrance and acknowledgement of marginalized indigenous American First Nations "forgotten" by the United States federal government. The Confederated Tribes of the Lower Rogue, building support for legislative acknowledgement of their tribal status, contributed positively to the production of signage text, an activity which enhanced both their visibility and the visibility and remembrance of their Athapaskan forebears.

In cranberry (Vaccinium macrocarpon Aiton) cultivation, farmers typically rent colonies of honey bee (Apis mellifera) for pollination. However, the efficiency of this bee at pollinating cranberries in Oregon, as in other regions, is questionable. Bumble bees (Bombus sp.) are reportedly effective in other regions, but their impact in Oregon is unknown. My objectives were to: (i) Compare bumble bee and honey bee pollination efficiencies under caged conditions; (ii) Estimate the abundance of bumble bees, honey bees, and other pollinators on an Oregon cranberry farm; and iii) Analyze and compare sources of pollen collected by bumble bees and honey bees in Oregon cranberries. In comparing pollination efficiencies of bumble bees and honey bees under caged conditions, the analysis of variance of data from the cage study indicated that bumble bee and honey bee pollinated plants yielded statistically equivalent average numbers of cranberries (1421 ± 302.5 and 1405 ± 347.6 berries/m², respectively) and weight of berries (11.5 ± 2.42 and 11.5 ± 2.77g/m²). However, bumble bees may have increased fruit set in honey bee treatments. On one occasion, bumble bees were found in the honey bee treatment, and may have contributed to the pollination of flowers in these plots. To estimate the abundance of pollinators, visual observations and were blue vane traps were utilized. Thirty-four timed visual observations in transects of cranberry beds were performed over on four dates during cranberry bloom. Blue vane traps were set-up on five occasions during bloom for two day periods. In the visual observations, honey bees (3.5 ± 0.58/min) were observed more frequently than bumble bees (1.2 ± 0.20/min). Bumble bees of four species made up 69.1% of trapped bees while honey bees made up 16.6% of bees caught in blue vane traps. On an Oregon cranberry farm during bloom periods in 2009, 2010 and 2011, pollen was collected from honey bee colonies using pollen traps. In 2010 and 2011, pollen was hand collected from reared bumble bee (B. vosnesenkii) colonies at the same farm. A total of 2937 honey bee pollen loads and 171 bumble bee pollen samples (137 scopal pollen loads, and 34 samples from with the colony) were individually acetolyzed and compared to a reference collection using light microscopy. Each pollen load was homogenized and 100 pollen grains were identified and counted to determine the percentage of each pollen type. Pollen collected by honey bees consisted of 29.1 ± 1.4% (2009), 18.3 ± 2.4% (2010), and 23.0 ± 1.1% (2011) cranberry pollen. Cranberry pollen contributed a higher percentage (56.0 ± 6.1%, and 70.4 ± 4.3% in 2010, and 2011, respectively) in bumble bee collected pollen. Both bee species collected pollen from non-target plants including those in the following families: Asteraceae, Fabaceae, Ranunculaceae, and Roseaceae. Native bumble bees (B. vosnesenskii) collected more cranberry pollen than pollen from non-target plants, and consistently collected a higher proportion of cranberry pollen than honey bees. The results of these studies suggest that native bumble bees may be adequate for cranberry pollination in Curry County, Oregon. However, the size of bumble bee populations may vary from year to year due to climactic conditions, availability of nesting sites, and forage before and after cranberry bloom. Thus the dependability and consistency pollination services rendered to cranberry crops by bumble bees needs to be further investigated in relation to population fluxuations. / Graduation date: 2012

Typescript. Includes vita and abstract. Bibliography: Includes bibliographical references (leaves 54-56). Description: 56 leaves : photos. ; 29 cm.

x, 100 p. : music / This study looks at the lives of female musicians who lived and worked in Oregon in the early twentieth century in order to answer questions about what musical opportunities were available to them and what musical life may have been like. In this study I am looking at the lives of the composers, performers, and music teachers, Ethel Edick Burtt (1886-1974) and Mary Evelene Calbreath (1895-1972). Mary Evelene Calbreath was a prominent Portland musician and composer. Her works were performed frequently in Portland and were written about newspapers. Ethel Edick Burtt composed piano pieces and songs, and performances of them were advertised in newspapers. Her life was remarkable enough to make it into encyclopedias like the <italic>Who's Who, Cohen,</italic> and the <italic>MacMillan.</italic> For this study I use archival material, newspaper advertisements and articles, and secondary sources about Portland and Oregon history. / Committee in charge: Anne Dhu McLucas, Chair; Lori Kruckenberg, Member; Loren Kajikawa, Member

viii, 234 p. A print copy of this thesis is available through the UO Libraries under the call number: KNIGHT PN4897.O74 E78 1995 / Studies have shown that women's ideas, especially those that challenge the status quo, have historically received little attention from the press. This thesis discusses how women were described in three of Oregon's frontier newspapers from 1846 to 1859, and also explores their contributions to the newspapers as writers, poets, editors, and businesswomen. Information from established American media clipped for the frontier papers described popular, mainstream ideas of womanhood, as well as provided news on the emerging women's rights struggle. Information generated locally on women encompassed a variety of themes, including marriage, education, and temperance. This study shows that even though content about women and women's roles as contributors were constrained by contemporary ideas of propriety and women's place in society, women were valued as readers and contributors to the three Oregon newspapers. / Committee in charge: Dr. Lauren Kessler, Chair; Dr. Timothy Gleason, Dr. Leslie Steeves