However, it was undesirable to screen wheat cell mutants resistant to scab through adding DON to medium because of DON's complicated action in wheat tissue culture.

然而，DON在小麦组织培养中的作用复杂，把它作为筛选抗赤霉病小麦细胞突变体的选择压，则是不合理的。

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The most effective method to control these diseases is to screen and to breed resistant varieties.

筛选和培育抗病品种是防治病害最为有效的方法。

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Objective this research is to screen low temperature-resistant strains and study COD degradation efficiency of the sewage water by the low temperature-resistant strains.

目的：筛选耐低温菌株并研究对模拟生活污水的降解效果，为利用微生物降解法处理低温生活污水奠定基础。

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