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Filtering by: Creator Crown, David A. Remove constraint Creator: Crown, David A. Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Committee Member Johnson, Ken Remove constraint Committee Member: Johnson, Ken

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  • Studies on the etiology and epidemiology of bull's eye rot of pears

    Creator:
    Henriquez, Jose Luis, 1961-
    Abstract:
    The objective of this dissertation is to introduce low-cost processing methods for the fabrication of ZnO transparent thin-film transistors (TTFTs). A novel method for depositing ZnO body layers via spin-coating of a zinc nitrate-based spin solution is presented. The processing conditions of spin-coated ZnO are optimized to produce continuous and...
    Resource Type:
    Dissertation
    Full Text:
    Neofabraea a/ba and N perennans; (3) to monitor conidial production in cankers; (4) to determine the timing

  • Factors influencing the effects of host diversity on plant disease epidemics for wheat stripe rust and potato late blight

    Creator:
    Garrett, Karen A.
    Abstract:
    Most studies of plant disease epidemiology have focused on epidemics in host populations composed of a single genotype. But crop plant diversity can be a useful means of improving the deployment of resistance genes. In a series of experiments with wheat stripe rust and potato late blight, we studied factors...
    Resource Type:
    Dissertation
    Full Text:
    Karen A. Garrett for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on

  • Enhancement of biological control for postharvest diseases of pear

    Creator:
    Benbow, Jesse M.
    Abstract:
    Yeast biocontrol agents that were applied to 'Bose' and 'Anjou' pears in the field up to three weeks prior to harvest were found to survive on the fruit at high population levels on both pear varieties. Cryptococcus infirmo-miniatus, Cryptococcus laurentii, and Rhodotorula glutinis maintained populations averaging 5 x 10⁶ cfu/fruit...
    Resource Type:
    Masters Thesis
    Full Text:
    yeast populations on untreated fruit. After a storage period of 2-4 months, fruit that were treated

  • Histological comparisons of needle tissues of four species of white pine infected by Cronartium ribicola

    Creator:
    Sweeney, Katarina
    Abstract:
    Hypersensitive response-like (HR-like) needle reactions to infection by the white pine blister rust pathogen, Cronartium ribicola, have been reported for several species of five needle pines native to western North America. The best-studied examples are in Pinus monticola and P. lambertiana. In these species a "needle spot" phenotype has been...
    Resource Type:
    Masters Thesis
    Full Text:
    . lambertiana. In these species a “needle spot” phenotype has been identified in which HR-like needle

  • 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:
    Mycosphaerella graminicola (anamorpltSeptoria tritici) causes Septoria tritici blotch, a globally important

  • Effects of intercropping beans with maize on angular leaf spot and rust of beans

    Creator:
    Boudreau, Mark Alan, 1958-
    Abstract:
    Experiments were performed to determine the nature of maize influence on bean disease in additive-type intercrops. Overall effects of intercrops on angular leaf spot (caused by Phaeoisariopsis griseola) in Kenya indicated >23% reductions (P<0.05) in area under the disease progress curve (AUDPC) in two of three season-site combinations. Fertilization tended...
    Resource Type:
    Dissertation
    Full Text:
    spot and rust of beans AN ABSTRACT OF THE THESIS OF Mark A. Boudreau for the degree of Doctor of