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Filtering by: Creator Berggren, T. J. Remove constraint Creator: Berggren, T. J. Academic Affiliation Botany and Plant Pathology Remove constraint Academic Affiliation: Botany and Plant Pathology Creator Angwin, Peter A. Remove constraint Creator: Angwin, Peter A. Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Genetics of sexuality and population genetics of Phellinus weirii

    Creator:
    Angwin, Peter A.
    Abstract:
    Phellinus weirii (Murr.) Gilbertson, cause of laminated root and butt rot, is a heterothallic basidiomycete lacking clamp connections. Two biological species groups of the fungus have been hypothesized, the Douglas-fir and cedar-types, on the basis of physiological, morphological and epidemiological differences. Single-spore and vegetative isolates differ in cultural morphology, nuclear...
    Resource Type:
    Dissertation
    Full Text:
    -Thuja isolates may overcome the effects of inhibitory compounds in T. plicata 25 heartwood

  • Environmental factors influencing the rate of spread of Phellinus weirii (Murr.) Gilbertson in young-growth Douglas-fir

    Creator:
    Angwin, Peter A.
    Abstract:
    Studies to identify the environmental factors that influence the rate of ectotrophic mycelial growth of Phellinus weirii (Murr.) Gilbertson along Douglas-fir roots were undertaken both in the laboratory and in the field. The effects of soil pH, nitrogen, moisture, temperature, microorganisms and bulk density were investigated. In the lab, the...
    Resource Type:
    Masters Thesis
    Full Text:
    Trichoderma is most consistently found in the upper 25-30 cm of soil. The most common species were T. viride