Canadian Forest Service Publications

Inoculations of balsam fir with Odontia bicolor: early establishment and associated microorganisms. 1975. Lachance, D. Canadian Journal of Forest Research 5(1): 130-138.

Year: 1975

Issued by: Laurentian Forestry Centre

Catalog ID: 15431

Language: English

Availability: PDF (request by e-mail)

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Balsam fir growing on a site having two different soil moisture contents (the drier soil moisture content induced artificially) were inoculated with Odontia bicolor (Alb. & Schw. ex Fr.) Quél. It is shown that the fungus infected roots more readily than trunks, that trunk wounds at 137 cm (4.5 ft) above ground were as susceptible to infection as those at 30 cm (1 ft), and that infection percentage obtained 1 and 2 years after inoculation, although generally higher the second year, were not significantly different. Other fungi, commonly associated with discolored and decayed wood in balsam fir also infected the inoculation wounds, some more frequently root wounds (e.g. Coniophora puteana, Trichoderma spp.), others trunk wounds (e.g. Retinocyclus abietis, Tympanis spp.). Amylostereum chailletii was isolated significantly more often from roots on wetter than drier soil conditions; Trichoderma spp. showed an opposite trend. O. bicolor apparently followed Graphium spp. at the infection site and was not affected by it as it grew into the wood. An apparent relationship also existed at the inoculation site between O. bicolor and Trichoderma spp.