Canadian Forest Service Publications

Selective action of fungus-inhibitory properties of balsam fir heartwood. 1962. Etheridge, D.E. Canadian Journal of Botany 40: 1459-1462.

Year: 1962

Issued by: Laurentian Forestry Centre

Catalog ID: 15141

Language: English

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Heartwood of balsam fir (Abies balsamea (L.) Mill.) has been found highly selective for Stereum sanguinolentum Alb. & Schw. ex Fr. and other primary invaders of this host. In tests with a number of species of fungi, including several important tree pathogens, this substrate exhibited fungus-inhibitory properties hitherto unsuspected on the basis of tests with heat-sterilized material. Tests have shown that the inhibitory property is more active in heart-wood than in sapwood, is substantially reduced by wet heat (½ hour à 100° C), and is relatively unaffected by dry storage (3 years at room temperature). The selective action did not depend upon the microbiological condition of the wood.