影響木耳菌絲在鋸屑培養基上生長及形成子實體之因子

Some Factors Affecting Mycelial Growth and Fruiting Body Formation of Auricularia polytricha (Mont.) Sacc. On Sawdust Medium

木耳（Auricularia polytricha(Mont.) Sacc.）菌絲生長之最適條件為28℃溫度，70%含水量、6%米糠，0.4%碳酸鈣。適當的醣類、含氮化合物及有機酸等的培養基。形成子實體之最適條件為25℃溫度，含水量75%的培養基。其他如照光期及光質對菌絲生長及子實體形成亦頗有影響。

By using sawdust culture method, the effects of temperature, light, air, and the composition of the medium on mycelial growth and pinhead formation were studied. The culture, Auricularia polytricha (Mont.) Sacc. from which the spawn prepared was obtained from a decaying wood from the campus of National Taiwan Normal University. The results revealed that the optimum temperature for the growth of mycelium was 28℃. The sawdust medium effective for the mycelial growth consisted of water 70%, rice bran 6%, CaCO3 0.4%, The effects of other components of the medium such as carbohydrates, nitrogen compounds, organic acids, etc. were also investisgated. The optimum temperature and water content in sawdust medium for the pinhead formation were at 25℃ in consisting of 75% of water. The effects of photoperiod and light quality on mycelial growth and pinhead formation were discussed in detail.