应用基因工程生产一次性使用的常规种子

美国公布的“植物基因表达调控”的专利技术，使经遗传改变的植物生产的下一代种子不能发芽。农民买了此一次性种子后，产量不受影响但不能留种用。种子公司把此技术作为开发新品种的一种手段。

Genetically Modifies Plants Produce Sterile Disposable Seeds

US Patent Control of plant gene expression" was introduced in this paper. The patented technology genetically modifies plants in order to prevent seeds from germinating in the next generation. Farms who buy such sterile seeds will be able to harvest a crop, but will not be able to save seeds from their harvest. Seed company sees it as an incentive to develop new varieties.