Search Constraints

Start Over
Filtering by: Subject Apple -- Diseases and pests -- Oregon Remove constraint Subject: Apple -- Diseases and pests -- Oregon Degree Name Honors Bachelor of Science (H.B.S.) Remove constraint Degree Name: Honors Bachelor of Science (H.B.S.)

Search Results

  • Induction of apple defense genes by Erwinia amylovora and biological control agents

    Creator:
    Bauer, Lisa M.
    Abstract:
    Fire blight is a serious disease of apple and pear trees caused by the bacterium, Erwinia amylovora. This bacterium harbors a pathogenesis mechanism known as the Hrp secretory operon which induces some resistance genes and suppresses other resistance genes in the host plant following invasion. While previous researchers analyzed expression...
    Resource Type:
    Honors College Thesis
    Full Text:
    disease of apple and pear trees caused by the bacterium, Erwinia amylovora. This bacterium harbors a

  • Fecundity of the aphid Rhopalosiphum padi on selected Oregon grasses

    Creator:
    Adams, Vincent T.
    Abstract:
    Barley yellow dwarf virus (BYDV) is a globally distributed pathogen of grasses that is transmitted by aphids. Little research has been done examining the response of aphids to different host grasses in naturally mixed communities. We measured the short-term fecundity of the aphid Rhopalosiphum padi, a widely distributed vector of...
    Resource Type:
    Honors College Thesis
    Full Text:
    padi, a widely distributed vector of BYDV, on a broad array of Oregon Poaceae in field and laboratory