琼脂是食用菌母种培养基不可缺少的原料,但价格较贵,且不易买到。为此,我校生物科技组利用豌豆淀粉代琼脂制作培养基取得了较好效果,现介绍如下。一、制作方法豌豆淀粉,四川广泛用来制作凉粉,白净透明,颇似琼脂,价格便宜(每斤仅0.60元左右)。制马铃薯综合培养基时,仅用7～8％的豌豆淀粉就可取代原配方中2％的琼脂。制作1000毫升培养基,先称取75克豌豆淀粉浸泡于200毫升冷水中,搅拌均匀待用。另取200克去皮的土豆,切成小块,放入800 Agar is an indispensable raw material for edible fungus mother medium, but the price is expensive, and not easy to buy. To this end, our biotechnology group using pea starch on behalf of the agar production of media has achieved good results, are presented below. First, the production method Pea starch, Sichuan is widely used to make jelly, white and transparent, quite agar, cheap (only 0.60 yuan per catty). For potato integrated media, 2% agar can be replaced with 7-8% pea starch. Produce 1000 ml of medium, first weighed 75 grams of pea starch soaked in 200 ml of cold water, stir until stand-by. Another 200 grams of peeled potatoes, cut into small pieces and put 800