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简述防止菌种退化的措施?

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正确答案:

1)防止菌种的混杂,在菌种转管、出菇试验等工作中,均应加强品种隔离,减少品种间的混杂,以保证优良品种的遗传组成在较长时间内能保持相对稳定。

(2)控制菌种传代次数,菌种传代次数越多,产生变异的概率就越高,因此菌种发生退化的概率就会越多,生产中应严格控制菌种的移接代数。

(3)采用有效的菌种保藏方法保存菌种。

(4)创造菌种生长良好营养条件和外界环境。

(5)防止病毒感染。

答案解析:
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