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ABSTRACT
Measurements were made of basidiocarp longevity and spore production of 10 isolates of Flammulina velutipes matured at 80% and 100% relative humidity. Basidiocarp longevity was positively correlated with spore production at 80% and 100% relative humidity (RH). Two groups among the ten isolates studied could be distinguished on the basis of spore production and basidiocarp longevity at 80% and 100% RH. Dry-tolerant isolates produced more spores at 80% RH than the wet-specialist isolates. Dry-tolerant isolates produced as many spores as wet-specialist isolates at 100% RH. At 100% RH, basidiocarp longevities for wet-specialist isolates did not differ from the basidiocarp longevities of dry-tolerant isolates. At 80% RH, however, dry-tolerant isolates had basidiocarps lasting on average almost three days longer than those of the wet-specialist isolates.
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