Effect on sodium selenite of mycelial growth in Morchella sextelatam of medical edible fungus
[Objective]To analyze the effects of different selenium concentrations on Morchella myceli-um,and to master the optimal formula of selenium-enriched medium in the hope of providing technical sup-port for the further development of selenium-enriched products.[Methods]Morchella sextelatam was used as selenium enriched carrier and sodium selenite as selenium source and the effects of different selenium concen-trations on the growth trend,mycelial density and mycelial morphology of Morchella sextelatam on different media were systematically analyzed.[Results]In liquid shake culture,when the concentration of selenium≤20 mg/L,the mycelial morphology no obvious change,and the promoting effect on The mycelial growth of Morchella sextelatam with the increase of concentration,and the dry weight at 20 mg/L.The culture medium,selenium concentration≤20 mg/L had no effect on the mycelial growth,mycelial density and mycelial mor-phology of Morchella sextelatam.the original mediumthe concentration of selenium≤20 mg/L,there was no significant change in mycelial density and mycelial morphology,and it promoted the growth of Morchella sexte-latam,which was the strongest at 10 mg/L.On the cultivation mediumselenium concentration of 20 mg/L the strongest promoting effect on the mycelium of Morchella sextelatam,and no significant change in mycelium density and mycelium morphology.[Conclusion]Sodium selenite is the best selenium source for Morchella sextelatam cultivation when concentration is 10～20 mg/L.
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