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Filtering by: Subject Pear -- Diseases and pests -- Oregon Remove constraint Subject: Pear -- Diseases and pests -- Oregon Committee Member Parke, Jennifer Remove constraint Committee Member: Parke, Jennifer Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • 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:
    biosynthesis was found to stimulate infections of pear and apple fruits by B. cinerea, respectively. This

  • Characterization, epidemiology, and ecology of a virus associated with black raspberry decline

    Creator:
    Halgren, Anne B.
    Abstract:
    The objective of this study was to characterize an unknown agent associated with decline in black raspberry (Rubus occidentalis) in Oregon. A virus was found consistently associated with decline symptoms of black raspberries and was named Black raspberry decline associated virus (BRDaV). Double stranded RNA extraction from BRDaV-infected black raspberry...
    Resource Type:
    Dissertation
    Full Text:
    , feedback, and genuine interest in my project. The Oregon black raspberry growers made this research

  • 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:
    . Studies were done to determine if there is a relationship between ear weight and several disease

  • Mulching to Manage Mummy Berry of Blueberry

    Creator:
    Florence, Jade
    Abstract:
    Monilinia vaccinii-corymbosi pseudosclerotia overwinter on the soil surface and produce apothecia in early spring, providing primary inoculum for Mummy Berry Disease of blueberry. Burial under 2.5 cm of soil or the absence of light have previously been identified as critical factors preventing the development of apothecia. Mulches were applied to...
    Resource Type:
    Dissertation
    Full Text:
    ............................................................................................................... ETIOLOGY AND MANAGEMENT OF MUMMY BERRY DISEASE ................................................ 8 LIGHT