研究抗逆相关基因的抗逆功能是基因工程抗性育种的前提。

One of the basis for plant genetic engineering is study on the function of stress-related gene.

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因此，培育抗病、抗虫和抗逆的作物品种是育种工作者长期而艰巨的任务。

Therefore, it is a Herculean and long-term task for plant breeding workers to cultivate the germplasms of resistance to these factors.

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