Growth promoting effects of water extract of Armillaria mellea rhizomorph on mycelia of Polyporus umbellatus

The authors investigate the effects of different concentrations of water extract of Armillaria mellea rhizomorphs on mycelial growth of Polyporus umbellatus. This study shows that water extract of A. mellea rhizomorph served as a good carbon and nitrogen source for mycelial growth of P. umbellatus, with 6? concentration of water extract of A. mellea rhizomorph exhibiting the best growth-promoting results.