不同氮源对马鞍菌菌丝生长的影响

Effect of Different Nitrogen Sources on the Growth of Mycelia of Helvella elastica

以2种马鞍菌为供试菌株,通过对其菌丝颜色、密度、均匀度、长势、菌丝生长速度及菌丝生长指数进行比较,探讨7种氮源对2种野生马鞍菌菌丝生长的影响。结果表明,2种马鞍菌对有机氮源、无机氮源、氨基酸氮源均能利用,说明其有较广的氮源谱,但利用程度有所差异,表现为有机氮源的培养基优于无机氮源和氨基酸氮源的培养基。2种马鞍菌在以牛肉膏为氮源时,菌丝洁白、浓密、均匀,菌丝长势为5分,菌丝生长速度较快,菌丝生长指数最高,分别达到45.5和45.0。综合分析马鞍菌菌丝生长的最适氮源为牛肉膏。

This experiment selected 2 kinds of Helvella elastica as the tested materials,the mycelium color,density,uniformity,growth,mycelium growth rate and mycelium growth index were compared to study the effects of seven nitrogen sources on the growth of mycelia on 2 kinds of Helvella elastica.The results showed that 2 kinds of Helvella elastica could use organic nitrogen sources,inorganic nitrogen sources,and amino acid nitrogen sources,which indicated that Helvella elastica had a wide spectrum of nitrogen sources.But the utilization degree was different,which showed that the organic nitrogen source medium was better than the inorganic nitrogen source medium and the amino acid nitrogen sources.When the beef extract was used as the nitrogen source,the mycelia of 2 kinds of Helvella elastica white,dense and uniform,the mycelium growth was 5 points,the mycelium growth rate was fast,and the mycelium growth index was the highest,reaching 45.5 and 45.0,respectively.Comprehensive analysis of the most suitable nitrogen source for the growth of Helvella elastica was beef extract.