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Abstract: A well aerated liquid medium creates favourable conditions for a vigorous growth of mycelium: cells are formed that separate from the mother cell and, becoming independent, give rise to new colonies of mycelium, which again form single cells, etc. This way of reproduction occurs solely when the mycelium is cultivated in a liquid medium. Such a growth shows five phases: (a) division of vegetative cells, (b) initial formation of hyphae, (c) branching of the hyphae and formation of new vegetative cells, (d) accumulation of nutrients, and (e) wearing out of the cells while vacuoles are being formed. The same medium may contain all phases or only some of them, depending on nutrients, temperature and other conditions. The reproductive bodies act as vegetative spores. After drying, grinding and subsequent rewetting the powder can again initiate the growth of aerial mycelium and fruit bodies. This may lead to the production of a new type of mushroom spawn. Such a powered mycelium concentrate may have some advantages over manure and grain spawn.
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