Index Catalog // ScholarsArchive@OSU

Powdery mildew (Podosphaera macularis Braun & Takamatsu) resistance in wild hop genetic resources

Creator:: Smith, Jodi M.
Abstract:: Hop powdery mildew, caused by Podosphaera macularis Braun & Takamatsu (formerly Sphaerotheca macularis (Wallr. :Fr.) Lind, syn. S. humuli (DC.)Burrill) was not observed in Pacific Northwest hop yards until 1997, when it was discovered in Washington. Within one year, it had spread to Oregon and Idaho. This emerging disease caused...
Resource Type:: Masters Thesis

Development, detection and elimination of Verticillium dahliae in mint shoot cultures and effects of bacterial cultures and bacterization on the growth and disease development

Creator:: Wang, Nan
Abstract:: Roots of greenhouse-grown peppermint (Mentha piperita L.) and spearmint (Mentha spicata L.) plants and in vitro-grown shoot cultures were inoculated with Verticillium dahliae conidial suspensions to study symptom development, detection, and elimination of the V. dahliae. There were significant differences in the symptom expression of control and infected shoot cultures...
Resource Type:: Masters Thesis
Full Text:: Bacterization on the Growth and Disease Development Abstract approved:' Barbara M. Reed Roots of greenhouse

Plant hormone-induced defense responses against Botrytis cinerea

Creator:: Akagi, Aya
Abstract:: Several plant hormones, including ethylene and jasmonates, are known to mediate responses against biotic and abiotic stress. The first and second objectives of this thesis were (i) to elucidate the role of ethylene in defense responses against Botrytis cinerea and specifically (ii) to determine the potential contribution of ethylene response...
Resource Type:: Dissertation
Full Text:: ............................................................................................... 30 Softening and disease progression ..................................................... 33

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Creator:: Sathuvalli, Vidyasagar R.
Abstract:: The hundred-year history of the hazelnut industry in the Pacific Northwest is threatened by eastern filbert blight (EFB) caused by the fungus Anisogramma anomala (Peck) E. Müller. Marker-assisted selection (MAS) has been extensively used for ‘Gasaway’ resistance in the hazelnut breeding program at Oregon State University. Concern over breakdown of...
Resource Type:: Masters Thesis
Full Text:: , ‘Ratoli’ and OSU 759.010) have shown no signs or symptoms of the disease following a series of

Development of an in vitro and modification of an in vivo bioassay to screen cherry genotypes for response to inoculation with Pseudomonas syringae pv. syringae

Creator:: Roche, M. Margaret
Abstract:: The bacterium Pseudomonas syringae affects different crops worldwide. In the Willamette Valley of Oregon, P. syringae causes bacterial canker in sweet cherry, severely limiting its production. High grafting of susceptible sweet cherry cultivars to resistant rootstocks is practiced in the Willamette Valley to reduce incidence of this disease. The research...
Resource Type:: Masters Thesis
Full Text:: blossoms (Cameron, 1962). The bacterial canker disease cycle includes prominent winter and summer phases

Factors affecting the incidence and severity of Phytophthora syringae cankers in pear (Pyrus communis) trees

Creator:: Laywisadkul, Srisangwan
Abstract:: Container grown pear trees were used to determine the effects of the following factors on the susceptibility to Phytophthora syringae: 1) tree nitrogen (N) status and foliar sprays of urea and copper-EDTA (CuEDTA); 2) dormancy and environmental conditions; 3) wound and wound age; and 4) chemical and biological control measures....
Resource Type:: Dissertation
Full Text:: ) wound and wound age; and 4) chemical and biological control measures. Lesion size and disease

Characterization of physiological resistance to white mold and search for molecular markers linked to resistance via advanced backcross QTL analysis in an interspecific cross between Phaseolus coccineus and P. vulgaris

Creator:: Haggard, Jack Erron
Abstract:: White mold, caused by Sclerotinia sclerotiorum (Lib.) de Bary, results in severe losses in the production of common bean, Phaseolus vulgaris, especially snap bean varieties. Advanced backcross QTL analysis was used to identify quantitative trait loci for resistance to white mold in an interspecific cross of P. vulgaris and P....
Resource Type:: Masters Thesis
Full Text:: , suggesting a role of this locus in disease avoidance. In Bunsi/Newport and Huron/Newport RIL populations

Breeding for bruchid resistance in common bean (Phaseolus vulgaris L.) : interspecific introgression of lectin-like seed proteins from tepary bean (P. acutifolius A. Gray), genetic control and bruchid resistance characterization.

Creator:: Kusolwa, Paul Mbogo
Abstract:: Interspecific hybridization was initiated between wild P. acutifolius accession G40199 and P. vulgaris to introgress resistance to Acanthoscelides obtectus (bean seed weevil). F1 interspecific hybrids were recovered by embryo rescue and maintained until flowering. Mostly sterile hybrids were backcrossed twice to common bean cultivar ICA Pijao to recover sufficient fertility...
Resource Type:: Dissertation
Full Text:: generations of the pest. Damage is directly related to the number of larvae that hatch and burrow into the

Traditional and molecular approaches to Zucchini yellow mosaic virus resistance in Cucurbita

Creator:: Brown, Rebecca Nelson
Abstract:: Zucchini yellow mosaic virus (ZYMV) is an important disease of Cucurbita worldwide. Resistant cultivars are the best means of control. ZYMV resistance is quantitative in the wild species C. ecuadorensis, and is controlled by at least three genes in tropical C moschata. Very little molecular work has been done in...
Resource Type:: Dissertation
Full Text:: 65 Results and Discussion 67 Morphological and Disease Resistance Traits 67 Days and nodes to

The effect of common corn smut (Ustilago maydis) on sweet corn (Zea mays L.) in the Columbia Basin

Creator:: Blatchford, Sarah
Abstract:: Impact of natural infection of common com smut (Ustilago maydis) on processing characteristics of three F₁ hybrid sweet com (Zea mays L.) cultivars was evaluated in a two-year study with early and late spring planting dates. At harvest maturity, size and location of galls were recorded and quality characteristics measured....
Resource Type:: Masters Thesis
Full Text:: and late spring planting dates. At harvest maturity, size and location of galls were recorded and

ScholarsArchive@OSU

Powdery mildew (Podosphaera macularis Braun & Takamatsu) resistance in wild hop genetic resources

Development, detection and elimination of Verticillium dahliae in mint shoot cultures and effects of bacterial cultures and bacterization on the growth and disease development

Plant hormone-induced defense responses against Botrytis cinerea

DNA markers linked to novel sources of resistance to eastern filbert blight in European hazelnut (Corylus avellana L.)

Development of an in vitro and modification of an in vivo bioassay to screen cherry genotypes for response to inoculation with Pseudomonas syringae pv. syringae

Factors affecting the incidence and severity of Phytophthora syringae cankers in pear (Pyrus communis) trees

Characterization of physiological resistance to white mold and search for molecular markers linked to resistance via advanced backcross QTL analysis in an interspecific cross between Phaseolus coccineus and P. vulgaris

Breeding for bruchid resistance in common bean (Phaseolus vulgaris L.) : interspecific introgression of lectin-like seed proteins from tepary bean (P. acutifolius A. Gray), genetic control and bruchid resistance characterization.

Traditional and molecular approaches to Zucchini yellow mosaic virus resistance in Cucurbita

The effect of common corn smut (Ustilago maydis) on sweet corn (Zea mays L.) in the Columbia Basin

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