Observations on the spore release ofPaxillus panuoides

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Abstract
Spore release of Paxillus panuoides was studied in a forest environment at temperatures from −4 to 24°C and 30 to 100% relative humidity (RH) near Stoneville, Mississippi, from December 1983 through February 1985. Spores were released when temperatures were above 0°C, and daily peaks were usually associated with increased temperatures and decreased RH. In a controlled environment, spore release increased from a temperature of 2°C, to a maximum at 37°C, then ceased at 45°C. Light and RH treatments did not significantly affect spore release. Temperature was determined to be the stimulus for the natural spore release pattern.

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