Effect of Microelement on Mycelial Growth of Agaricus bisporus

The experiment objective was to study the effect of microelement on the mycelial growth of Agaricus bisporus 2796.In this article,the effects of five kinds of microelement from Zn2+、Cu2+、Co2+、Mo(VI) and Mn2+ in different concentration on the growth of Agaricus bisporus were studied by the solide and liquid culture methods.Mycelial dry weight,mycelial growth vigor,intracellular polysaccharide content,peroxidase activity and extracellular protein content were analyzed in treated groups.The results showed the mycelial growth vigor intracellular polysaccharide and extracellular protein content of Agaricus bisporus were promoted by adding the above-mentioned five kinds of 20—40mg/L microelement.Compared to the control,the most obvious effect on the mycelium growth was Mn2+,the dry weight of mycelium reached the highest value 200mg/100ml.Intracellular polysaccharide reached the highest values 23mg/100ml,they increased 200% and 400% respectively.But higher concentration microelement would inhibit the mycelium growth.