融合菌株的菌落和细胞形态与亲本株明显不同。

There were apparent differences between parental strains and fusants in colony and cell morphology.

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从不同环境中采集7份土壤样品用于芽孢杆菌的分离纯化，通过多次平板划线分离纯化得到30个菌落形态不同的菌株。

Strains of Bacillus spp. were isolated from 7 soil samples using repeated plate streaking, and 4 strains of them had rivalry ability to Fusarium oxysporum f. sp. cucumerinum.

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