Index Catalog // ScholarsArchive@OSU

Non-parametric habitat models with automatic interactions

Creator:: McCune, Bruce
Abstract:: Questions: Can a statistical model be designed to represent more directly the nature of organismal response to multiple interacting factors? Can multiplicative ernel smoothers be used for this purpose? What advantages does this approach have over more traditional habitat modelling methods? Methods: Non-parametric multiplicative regression (NPMR)was developed from the premises...
Resource Type:: Article
Full Text:: space: A multidimensional space, the m coordinates of the space defined by the m measured environmental

Specificity of quantitatively expressed host resistance to Mycosphaerella graminicola

Creator:: Krenz, Jennifer E.
Abstract:: The specificity of quantitative host resistance to plant disease has long been a controversial issue. We examined interactions between wheat (Triticum aestivum) and Mycosphaerella graminicola, causal agent of Septoria tritici blotch, to determine whether specific interactions occur between host and pathogen genotypes that could be involved in eroding quantitatively expressed...
Resource Type:: Masters Thesis
Full Text:: graminicola. Abstract approved: Christopher C. Mundt The specificity of quantitative host

Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

Creator:: Holt, Emily A.
Abstract:: The purpose of this dissertation was to define macrolichen community gradients in relation to succession, grazing and the environment. First, species scores indicating when macrolichen species appeared following disturbance were derived from the literature. Weighted averaging of these data with a community matrix created a successional score for each sample...
Resource Type:: Dissertation
Full Text:: , K.A. 1976 Fire 17 Manseau, M. et al. 1996 Grazing 18 Morneau, C. and Payette, S. 1989 Fire 19

Conservation of Oenothera wolfii (Onagraceae) : introducing a threatened plant into two protected locations in Oregon

Creator:: Currin, Rebecca E.
Abstract:: The showy biennial to short-lived perennial Oenothera wolfii (Munz) Raven, Dietrich & Stubbe (Wolf’s evening primrose) occurs in only a small number of isolated populations on the southern Oregon and northern California coast. This rare species is currently listed as Threatened in Oregon, and is considered a Species of Concern...
Resource Type:: Masters Thesis

Biology of sweet cherry powdery mildew

Creator:: Calabro, Jill M.
Abstract:: The Pacific Northwest has become one of the nation’s premier sweet cherry, Prunus avium, production areas. As production of sweet cherries has flourished in Oregon and Washington, so has powdery mildew, caused by the fungus Podosphaera clandestina, which infects both foliage and fruit causing severe economic damage to growers. Sweet...
Resource Type:: Dissertation
Full Text:: THESIS OF Jill M. Calabro for the degree of Doctor of Philosophy in Botany and Plant Pathology

Irrigated crop research in Oregon's Columbia Basin : 1981 research report

Creator:: Oregon State University. Agricultural Experiment Station and Columbia Basin Agricultural Research Center
Abstract:: Published July 1981. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: University, Corvallis, Oregon 97331 5. D. C. Hane, Research Assistant, Columbia Basin Agriculture Research

Characterization of the molecular foundations and biochemistry of alkane and ether oxidation in a filamentous fungus, a Graphium species.

Creator:: Skinner, Kristin M.
Abstract:: Graphium sp., a eukaryotic alkanotroph, is able to oxidize small-molecular weight gaseous n-alkanes, diethyl ether and the branched ether, methyl tert butyl ether (MTBE). However, information regarding the biochemistry of fungal-mediated alkane and ether metabolism is limited, and questions regarding the identity of alkane oxidation catalysts and the genetic underpinnings...
Resource Type:: Dissertation
Full Text:: THE DISSERTATION OF Kristin M. Skinner for the degree of Doctor of Philosophy in Botany and Plant

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:: Miller, Nathan L. (Nathan Louis)
Abstract:: Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...
Resource Type:: Dissertation
Full Text:: 1985 1990 1995 2000 2005 Y ie ld (m et ri c to ns /h ec ta re ) 10 12 14 16 18 20 22

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Creator:: Sweet, Heather R.
Abstract:: Pollination ecology may play an important role in the maintenance of selfing in populations of self-compatible hermaphroditic plants where both selfing and outcrossing occur (mixed mating). Behavior and abundance of pollinators can influence the two major modes of selfing; autogamy (selfing within a flower) and geitonogamy (selfing between flowers on...
Resource Type:: Masters Thesis
Full Text:: flowers visited in succession on a plant, and C) average number of flowers visited per foraging sequence

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

Creator:: David, Nicholas L.
Abstract:: Field trials were conducted during 2001 to 2003 to investigate soil population dynamics of Meloidogyne chitwoodi, tuber symptom suppression using oxamyl, and post-harvest tuber symptom development on short-season potato varieties Russet Norkotah and Russet Nugget (San Luis Valley only). The experiments were located in the San Luis Valley in Colorado,...
Resource Type:: Dissertation
Full Text:: commercially unacceptable. Since M. chitwoodi is capable of infecting roots at low temperatures (5°C), the

ScholarsArchive@OSU

Non-parametric habitat models with automatic interactions

Specificity of quantitatively expressed host resistance to Mycosphaerella graminicola

Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

Conservation of Oenothera wolfii (Onagraceae) : introducing a threatened plant into two protected locations in Oregon

Biology of sweet cherry powdery mildew

Irrigated crop research in Oregon's Columbia Basin : 1981 research report

Characterization of the molecular foundations and biochemistry of alkane and ether oxidation in a filamentous fungus, a Graphium species.

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

The influence of pollinators on the maintenance of mixed mating in a population of the blue columbine, Aquilegia coerulea (Ranunculaceae)

Biology and management of Meloidogyne chitwoodi using oxamyl on potato in the western United States

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