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Filtering by: Subject Root rots Advisor Hansen, Everett M.

Factors affecting inter-tree root contact and the transmission of Phellinus weirii in young-growth Douglas-fir

Creator:

Reynolds, Keith M.

Abstract:

Groups of second-growth Douglas-fir (Mirb.) Franco were excavated in plots of two to six trees on two sites in the vicinity of Cowichan Lake, Vancouver Is., British Columbia. Eleven excavation plots provided 36 trees which could be studied in pairs (a total of 50 pairs) in order to ascertain the...

Resource Type:

Masters Thesis

Full Text:

were incorporated into a model for spread of laminated root rot. The goal of the spread model is to
Trichoderma spp. : distribution in stumps infested with Phellinus weirii and growth and antagonism in vitro

Creator:

Goldfarb, Barry

Abstract:

To determine which isolates will most rapidly replace Phellinus weirii in stumps and roots, Trichoderma spp. were isolated from P. weirii-infested stumps and roots, identified, and examined for growth rates and lethal effects on P. weirii in vitro. Phellinus weirii-infested Douglas-fir stumps and stump roots were sampled for microorganisms by...

Resource Type:

Masters Thesis

Full Text:

fungus, Phellinus weirii (Murr.) Gilb., causes laminated root rot, a destructive disease of conifers in
RFLP analysis of genetic variation in the laminated-root-rot fungal pathogen of conifers, Phellinus weirii

Creator:

Bae, Hanhong

Abstract:

DNA markers that detect polymorphisms within and between two biological species of the coniferous laminated-root-rot fungus Phellinus weirii were developed and used to measure the amount and distribution of genetic variation. In a preliminary survey, total cellular DNA from 3 Douglas-fir-type isolates and 3 cedar-type isolates was digested with 12...

Resource Type:

Masters Thesis