The other is genetic engineering, which came to the fore in the 1980s, a technology in which certain genes are inserted into plant DNA. For example, after introducing virus-resistance genes into corn, the next generation will be virus resistant.
另一種則是 1980 年代竄起的基因轉殖技術，利用某些「性徵基因」注入植物體內的技術；例如玉米打入抗病毒基因後，下一代就會有抗病毒的特性。