Index Catalog // ScholarsArchive@OSU

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:: & Paul Aubert, Marv Polehn, Jim Reed, Robin Locke, Kyle Mathison, Jeff Allen, Lynn Long, and Mike Bush

Factors affecting establishment and germination of upland prairie species of conservation concern in the Willamette Valley, Oregon

Creator:: Jones, Katherine D.
Abstract:: Identifying mechanisms that determine who lives and dies is the first step in developing successful restoration techniques for rare species and endangered habitats. We studied interactions that affect establishment of native plant forbs of conservation concern at the seedling stage to support the theoretical basis for restoration activities in Pacific...
Resource Type:: Masters Thesis
Full Text:: Katherine D. Jones for the degree of Master of Science in Botany and Plant Pathology presented on March 19

Community Ecology of Foliar Fungi and Oomycetes of Pseudotsuga menziesii on the Pacific Northwest Coast

Creator:: Gonen, Lilah
Abstract:: Pseudotsuga menziesii var. menziesii (coast Douglas-fir) is a tree of ecological, economic, and cultural value in its native North American Pacific Northwest (PNW) distribution. P. menziesii is host to a variety of well-documented endophytic foliar microorganisms, including the fungus Nothophaeocryptopus gaeumannii, the causal agent of Swiss needle cast (SNC), and...
Resource Type:: Masters Thesis
Full Text:: . Abstract approved: ______________________________________________________________________ Andy Jones

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Creator:: Goodell, Jody Jellison
Abstract:: Preliminary studies were run to determine the sensitivity and reliability of enzyme-linked immunosorbent assay (ELISA) for the detection of potato virus X (PVX). ELISA was found to be capable of detecting PVX in tobacco at a 1:3333 sample dilution. The reliability of ELISA for the detection of PVX in potato...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for privacy Thomas C. Allen Preliminary studies were run to determine the

Mitigating cyanobacterial harmful algae blooms : the role of plant humics

Creator:: Theis, Susan A. F.
Abstract:: Cyanobacterial harmful algae blooms (cyanoHABs) are a growing concern worldwide due to damage of ecosystems and threats to human health. Previous research indicates that plant humics from aquatic and wetland vascular plants are effective inhibitors of cyanobacterial metabolism and growth and may be useful as control agents for mitigating cyanoHABs....
Resource Type:: Masters Thesis
Full Text:: : ____________________________________________ Allen J Milligan Abstract: Cyanobacterial harmful algae blooms (cyanoHABs) are a

Development of in vitro lily scale budlets as related to virus elimination

Creator:: Ruttum, Joanne C.
Abstract:: Lily hybrids vary in their ability to produce virus-free (VF) bulblets when grown from virus-infected scales in tissue culture. Asiatic hybrids typically produce a higher percentage of in vitro VF scale bulblets than do Lilium longiflorum cultivars. Three hypotheses concerning the cause of this variation are tested on five lily...
Resource Type:: Masters Thesis
Full Text:: Bulblets as Related to Virus Elimination Abstract approved: -Redacted for Privacy_ Thomas C. Allen, Jr

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Creator:: Gannon, Dustin G.
Abstract:: Plant-pollinator mutualisms are one of the most prevalent and economically important mutualisms in nature. Like many other ecological systems, plant-pollinator communities are threatened by anthropogenic activity, both directly (e.g., habitat conversion and fragmentation) and indirectly (e.g., climate change). While we are aware of many of the activities that adversely impact...
Resource Type:: Dissertation
Full Text:: , and Landscape Genetics of Pollinator-Dependent Plants Abstract approved: Frank Andrew Jones Plant

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

Creator:: Johnson, John Morris
Abstract:: Contracting nucleolar vacuoles are a general and consistent feature of somatic tobacco cells growing in microcultures. Nucleolar vacuoles were studied in cells from callus tissues of two single-cell clones, H-196 and H-239, of hybrid tobacco (Nicotiana tabacum X N. glutinosa). Vacuoles periodically contracted either completely or incompletely, apparently releasing a...
Resource Type:: Dissertation
Full Text:: Dr. Robert M. Storm, Dr. Leo E. Jones, major professor under whose direction this thesis was

Biosystematics of a Western North American polyploid complex in the genus aster

Creator:: Guppy, Geraldine Anne Allen
Abstract:: Species relationships were investigated in a western North American polyploid complex in the genus Aster (Asteraceae). A combination of cytological, genetical, chemical, morphological and numerical approaches was employed. Fifteen presently recognized species were included in the study, and populations were sampled throughout most of the range of the group. Living...
Resource Type:: Dissertation
Full Text:: complex in the genus aster AN ABSTRACT OF THE THESIS OF Geraldine Anne Allen Guppy for the degree of

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Creator:: Holub, Scott M.
Abstract:: Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Scott M. Holub for the

ScholarsArchive@OSU

Biology of sweet cherry powdery mildew

Factors affecting establishment and germination of upland prairie species of conservation concern in the Willamette Valley, Oregon

Community Ecology of Foliar Fungi and Oomycetes of Pseudotsuga menziesii on the Pacific Northwest Coast

Potato virus X : detection and inter-relationship with Verticillium dahliae and Colletotrichum atramentarium

Mitigating cyanobacterial harmful algae blooms : the role of plant humics

Development of in vitro lily scale budlets as related to virus elimination

Plant-Pollinator Interactions in a Changing World: Cryptic Specialization, Pollinator Movement, and Landscape Genetics of Pollinator-Dependent Plants

Contracting nucleolar vacuoles in somatic tobacco cells growing in microcultures

Biosystematics of a Western North American polyploid complex in the genus aster

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

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