Index Catalog // ScholarsArchive@OSU

Effects of host resistance on Mycosphaerella graminicola populations

Creator:: Cowger, Christina
Abstract:: Mycosphaerella graminicola (anamorph Septoria tritici) causes Septoria tritici blotch, a globally important disease of winter wheat. Resistance and pathogenicity generally vary quantitatively. The pathogen reproduces both sexually and asexually, and the pathogen population is highly genetically variable. Several unresolved questions about the epidemiology of this pathosystem are addressed by this...
Resource Type:: Dissertation
Full Text:: Resistance on Mycosphaerella graminicola Populations. Abstract approved: Christopher C. Mundt

The potato : composition, non-enzymatic browning and anthocyanins

Creator:: Rodriguez-Saona, Luis Enrique
Abstract:: Chipping varieties and model systems were used to determine the role of potato constituents on chip color. Composition was evaluated by HPLC and chip color measured using a ColorQuest colorimeter. Reducing sugar (RS) content did not completely explain color quality when present in low concentrations (<60 mg/lOOg). Levels of ascorbic...
Resource Type:: Dissertation
Full Text:: juices showed color similar to FD&C Red # 40. Excellent stability was obtained with all treatments in

Modeling the temperature-mediated phenological development of alfalfa (Medicago sativa L.)

Creator:: Ben-Younes, Mongi, 1953-
Resource Type:: Dissertation
Full Text:: ) indicated that 4.6 °C was an appropriate base temperature for alfalfa cultivars. Alfalfa development

Nesting ecology of mallards in the Willamette Valley of Oregon

Creator:: Rickerson, Eric V.
Abstract:: Although widely studied in many portions of North America, little is known about the specific habitat requirements of mallard ducks (Anas platyrhynchos) during the breeding season in western Oregon. I radio-marked 72 female mallards in the Willamette Valley of Oregon in March-April 1995-96 to document wetland habitat selection during pre-nesting...
Resource Type:: Masters Thesis
Full Text:: and September (Franklin and Dryness 1988). Annual temperatures range from 4.0 to 18.9° C, with an

Ecology of mallard ducklings on Lower Klamath National Wildlife Refuge, California

Creator:: Mauser, David M.
Abstract:: The ecology of female mallards (Anas platyrhynchos) and their broods was studied during 1988-90 on Lower Klamath National Wildlife Refuge, California. Survival of 127 radio-marked ducklings from 64 broods was 0.18 to 10 days of life, and 0.37 and 0.34 to fledging for 1988, 1989, and 1990, respectively. For the...
Resource Type:: Dissertation
Full Text:: , 1988-90. C = confirmed agent of mortality, P = probable agent, and U = unknown agent. . . . 18 CHAPTER

Cross-cultural sweetness preferences for a sports drink

Creator:: Chung, Seo-Jin
Abstract:: Asian countries have become one of the largest export markets for US food developers during the past decade. Understanding consumer expectations and needs in a cross-cultural framework has gained importance for new products to succeed in the international markets. A sports-drink, which is a functional drink for athletes, has been...
Resource Type:: Masters Thesis
Full Text:: ® 168 C The number of people by previous experience with the product in each country 173 D

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

Creator:: Krissman, Cortnie M.
Abstract:: North American sagebrush (Artemisia spp.) ecosystems are suffering from reductions in habitat extent and quality. Only about 50% of sagebrush remains from pre-settlement conditions, and much of the remaining habitat is fragmented or degraded by invasive species, fire suppression and overgrazing. Sagebrush-obligate species are experiencing population declines as a result...
Resource Type:: Masters Thesis
Full Text:: ....................................................................92 C. Trellis graph based on negative binomial regression model with percent sagebrush and

A simulation tool for evaluating sensory data analysis methods

Creator:: Naini, Shuo
Abstract:: In cross-cultural studies, respondents from specific cultures may have different product preferences and scale usage. Combining data from different cultures will result in departures from the basic assumptions of analysis of variance (ANOVA) and loss of power in testing capability of finding product and culture differences. However, the result of...
Resource Type:: Masters Thesis

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

Creator:: Glenn, Elizabeth M.
Abstract:: Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
Resource Type:: Dissertation
Full Text:: conditions, total snowfall, and number of days ≥ 32˚C on 6 northern spotted owl study areas in Oregon and

Changes in size and age at maturity of Columbia River upriver bright fall chinook salmon (Oncorhynchus tshawytscha) : implications for stock fitness, commercial value, and management

Creator:: Beaty, Roy E.
Abstract:: The average size and age of chinook salmon (Oncorhynchus tshawytscha) caught in commercial fisheries along the Pacific Coast of North America have decreased substantially in this century. These declines might be caused in part by changes in size and age at maturity within the stocks contributing to those fisheries. Upriver...
Resource Type:: Masters Thesis
Full Text:: Wildlife Redacted for Privacy Dean of Graduate c 0 ool < Date thesis is presented February 18, 1992

ScholarsArchive@OSU

Effects of host resistance on Mycosphaerella graminicola populations

The potato : composition, non-enzymatic browning and anthocyanins

Modeling the temperature-mediated phenological development of alfalfa (Medicago sativa L.)

Nesting ecology of mallards in the Willamette Valley of Oregon

Ecology of mallard ducklings on Lower Klamath National Wildlife Refuge, California

Cross-cultural sweetness preferences for a sports drink

Range-wide abundance and fluctuating asymmetry patterns of sagebrush-obligate passerine birds

A simulation tool for evaluating sensory data analysis methods

Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

Changes in size and age at maturity of Columbia River upriver bright fall chinook salmon (Oncorhynchus tshawytscha) : implications for stock fitness, commercial value, and management

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