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Fruiting at High Temperature and Its Genetic Control in the Basidiomycete Flammulina velutipes

By Sara A. Fultz


Of 10 geographic strains of Flammulina velutipes, 4 were found capable of fruiting at 22°C (Fr(H)) rather than at the typical 15°C (Fr(L)). Crosses made between Fr(H) and Fr(L) monokaryons were never observed to fruit at 22°C. However, some hybrids did fruit at the intermediate temperature of 18°C when grown on appropriate substrates, indicating incomplete dominance of the low-temperature requirement. Analysis of progeny of five Fr(H) × Fr(L) crosses indicated that a minimum of two genes appears to control the requirement for fruiting at ≤15°C. The genes are not closely linked to either incompatibility locus

Topics: Mycology
Year: 1988
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Provided by: PubMed Central
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