MOISTURE AND TEMPERATURE RELATIONS OF HEARTWOOD FUNGI IN SUBALPINE SPRUCE

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Abstract
The optimum moisture content for maximum development in wood was higher for butt-rotting fungi than for trunk-rotting fungi but the optimum and maximum temperature for growth on malt agar was about 5 °C. lower for the butt-rotting fungi. The fungi appeared to have the power of regulating to some extent the moisture content of the wood to a level more suitable for their development. There is evidence of a relationship between the maximum growth of the fungi on agar and their maximum development in wood. The possibility that adaptation to different host environmental conditions might explain differences in the moisture and temperature requirements of the fungi is discussed.

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