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美国环境保护局已批准了用于控制大田玉米杂草的Liberty除草剂。这种除草剂是由AgrEvo公司生产的,它是一种非选择性草甘磷-胺除草剂。对此,Liberty Link公司已培育出Liberty抗性玉米杂种,包括用于玉米种子繁殖的结合抗性与雄性不育性的一些杂种。公司Liberty市场经理Jeff Springsteen说,现已有95个以上的种子公司成为AgrEvo公司的Liberty Link种子合作伙伴,为购买者提供了180个转基因玉米杂种。其中多数于1997年春季供给种植者种植。公司计划于1998年种植季节培育并推出Liberty抗性大豆。随后将很快推出具有同样抗性的甜菜、水稻以及棉花品种。公司声称,Liberty是一种叶面除草剂,施用后,很快与土壤粒子结合,并降解为基本的碳和氮化合物。
The U.S. Environmental Protection Agency has approved Liberty herbicides used to control field corn weeds. This herbicide, produced by AgrEvo, is a non-selective glyphosate-amine herbicide. In response, Liberty Link Inc. has developed Liberty-resistant maize hybrids, including some hybrids for combined resistance and male sterility for maize seed multiplication. Jeff Springsteen, Liberty’s marketing manager at the company, said more than 95 seed companies are now AgriEvo’s Liberty Link seed partners, providing buyers with 180 GM corn hybrids. Most were planted with growers in the spring of 1997. The company plans to cultivate and launch Liberty-resistant soybeans in the 1998 planting season. Sugar beet, rice and cotton varieties with similar resistance will soon be released. The company claims that Liberty, a foliar herbicide, quickly binds to soil particles and degrades to basic carbon and nitrogen compounds.