（6）产量突变型（producing mutant）：通过基因突变获 得的在有用产物的产量上同原始菌株有差别的突变株，分为 “正变株”（plus-mutant）和“负变株”（minus-mutan...
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According to the strain breeding theory, the selection and breeding of antibiotics AGPM producing mutant and the fermentation technology of AGPM were systematically studied in this thesis.
本文根据育种理论，对新型抗肿瘤抗生素agpm生产菌种的选育、发酵法生产抗生素agpm进行了系统的研究。
The invention discloses a method for screening a mutant strain of a butanol producing strain for removing catabolic repression of glucose.
本发明公开了一种筛选丁醇产生菌突变株的方法。
The selected Aspergillus mutant strain, A28-8, was an excellent keratinase-producing strain.
曲霉a28 - 8是一株优良的角蛋白酶分泌突变菌株。
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