Study on biological characteristics and technology of spawn production, cultivation of king oyster mushroom (pleurotus eryngii) and yunzhi mushroom (trametes versicolor) in vietnam

<p> 1. From the assessment results on indicators of growth and development of 6 spawns of King Oyster mushrooms (Pleurotus eryngii) and 2 spawns of Yunzhi mushroom in pure culture stages and rearing period, King oyster mushroom strain E1 and Yunzhi mushroom strain Tra- 1, adaptable to the ecological conditions of Vietnam, have been selected. 2. Optimal conditions for propagating E1 liquid spawn of King oyster mushrooms at the stage of spawn grade 1: temperature for rearing mycelium is 26 ± 1ºC; pH6; medium formula 5; shakeing mode 160 r /min; original spawn seed rate for inoculation is 30% of original spawns/200ml of liquid medium; innoculating time is 96 hours. In the stage of intermediate spawns: aeration rate of 0.7 liters of air / medium 24 liter / min; rate of spawn gradel 1 for seedlings of inter mediate spawns is 7% compared to the medium. For the stage of commercial spawns, suitable medium formula for breeding commercial King oyster mushroom E1 is formula 3. Optimal conditions for propagation of Yunzhi Tra-1 (Trametes versicolor) liquid spawn level 1: temperature: 30 ± 1 º C; pH6; Medium Formula 3; shaking mode 140 r/min, the rate of original spawns used for innocubating 30% /200ml of medium; incubation time is 84 hours. In the stage of intermediate spawns: aeration rate of 0.6 l air /1 liter of medium / min; ratio of original spawn of Grade 1 for mediated inoculation is 10% comparing to the medium; suitable medium formula for breeding commercial Yanzhi mushroom Tra-1 is formula 2. </p>

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