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Filtering by: Creator National Marine Fisheries Service, Northwest Region Remove constraint Creator: National Marine Fisheries Service, Northwest Region Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Subject Phytophthora diseases Remove constraint Subject: Phytophthora diseases

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  • Comparative epidemiology of Phytophthora diseases of Rhododendron

    Creator:
    Taylor, Clare Rebecca
    Abstract:
    Rhododendron species are host to many Phytophthora species and are an important crop in the nursery industry. The foliar epidemiology of twelve Phytophthora diseases on Rhododendron was studied in field and growth chamber experiments on two Rhododendron cultivars. The relative aggressiveness of Phytophthora spp. was assessed using disease incidence, severity,...
    Resource Type:
    Masters Thesis
    Full Text:
    United States Department of Agriculture - Agricultural Research Service (USDA-ARS) CRIS 5358-22000

  • Port-Orford-cedar and Phytophthora lateralis : grafting and heritability of resistance in the host, and variation in the pathogen

    Creator:
    McWilliams, Michael G.
    Abstract:
    Port-Orford-cedar (Chamaecyparis lawsoniana) is a forest tree native to a small area of Oregon and California. A root disease caused by Phytophthora lateralis causes widespread mortality of Port-Orford-cedar. This dissertation examines three important elements of the Port-Orford-cedar P. lateralis pathosystem related to breeding for disease resistance: use of resistant rootstocks...
    Resource Type:
    Dissertation
    Full Text:
    were provided by the Siskiyou National Forest through Mel Greenup, Jim Nielson, and Nick Vagle. Alaska

  • Resistance mechanisms of Port-Orford-cedar to Phytophthora lateralis

    Creator:
    Oh, Eunsung
    Abstract:
    Breeding Port-Orford-cedar for resistance to Phytophthora lateralis, a causal agent of root disease, begins by screening, through artificial inoculation, phenotypically resistant trees selected from natural stands. The successful program selected tolerant or resistant POC parent trees for the purpose of disease management. Candidate resistant POCs were used in my dissertation...
    Resource Type:
    Dissertation
    Full Text:
    received attention from pathologists, nursery managers, and foresters in the Pacific Northwest region