在现实中，基因改造与传统杂交育种根本性不同，有非常良好的科学理由使人们要关心转基因农作物的安全问题。
In reality, genetic modification differs fundamentally from traditional crossbreeding, and there are very good scientific reasons for being concerned about the safety of GM crops.
杂交育种技术是培育优良作物品种的有效方法，在主要经济作物育种中已得到广泛的应用。
Crossbreeding as a effective way to cultivate excellent crop variety has been extensively applied on major economic crops breeding.
另外，在杂交育种中，亲本选配的原则之一就是选用遗传差异比较大的亲本，这已在其它农作物育种中取得了成功。
Furthermore, it is important for breeding cultivars mat parents have greater genetic diversity, which had been succeed in other crop breedings.
另外，在杂交育种中，亲本选配的原则之一就是选用遗传差异比较大的亲本，这已在其它农作物育种中取得了成功。
Furthermore, it is important for breeding cultivars mat parents have greater genetic diversity, which had been succeed in other crop breedings.
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