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Filtering by: Subject Pear -- Disease and pest resistance -- Genetic aspects Remove constraint Subject: Pear -- Disease and pest resistance -- Genetic aspects Committee Member Mehlenbacher, Shawn Remove constraint Committee Member: Mehlenbacher, Shawn

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  • Stripe rust resistance pyramids in barley

    Creator:
    Castro Tabo, Ariel Julio
    Abstract:
    Genetic resistance is the most appropriate way to control diseases in crop plants. Resistance can be described as qualitative (involving a gene-for-gene system) or quantitative (with continuous distribution of disease levels). The relationships between different types of resistance remain obscure, as does the genetics of quantitative traits. The use of...
    Resource Type:
    Dissertation
    Full Text:
    importance. Genetic resistance is the most economical and environmentally appropriate strategy for disease

  • Development and use of molecular tools in Fragaria

    Creator:
    Njuguna, Wambui
    Abstract:
    This dissertation describes the application and development of molecular tools that have great potential for use in studying variation in strawberry germplasm. The first study evaluated 91 microsatellite (simple sequence repeat, SSR) markers for transferability in 22 Fragaria species and their utility in fingerprinting octoploid strawberries. Out of the transferable...
    Resource Type:
    Dissertation
    Full Text:
    characterization of these accessions is warranted to validate resistance and usefulness in breeding. In the

  • Genetic resistance to white mold (Sclerotinia sclerotiorum (Lib.) De Bary) in scarlet runner beans (Phaseolus coccineus L.)

    Creator:
    Gilmore, Barbara S.
    Abstract:
    White mold, caused by Sclerotinia sclerotiorum (Lib.) De Bary, is a destructive yield-limiting disease of common bean (Phaseolus vulgaris L.). Genetic resistance to this pathogen is limited in common bean. Identification of high levels of partial physiological resistance in a genetically cross compatible species, Phaseolus coccineus, is advisable. The objectives...
    Resource Type:
    Dissertation
    Full Text:
    l30.2007. Title: Genetic Resistance to White Mold (Sclerolrnia sclerorrorzz (Lib.) De Bary) in Scarlet

  • Investigation of hop downy mildew through association mapping and observations of the oospore

    Creator:
    Parker, Thomas B.
    Abstract:
    Hop downy mildew is a devastating disease affecting hop requiring expensive fungicide applications throughout the growing season. Plant resistance is highly desirable and theorized as being decidedly quantitative with dominance and epistasis involved in resistance. An association mapping approach using a mixed-model was used to identify AFLP markers associated with...
    Resource Type:
    Dissertation
    Full Text:
    importance and breeding for resistance Hop downy mildew is a disease of major importance in the hop