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(一)保铃棉的审批: 经过6年的多点田间试验,保铃棉终于在1996年获准在美国进入商业化生产。在这6年的试验中,保铃棉不仅在多种不同环境条件下表现出了出色的抗虫性和丰产性,而且顺利地通过了美国三个权威部门的严格审查,这三个部门分别是:美国农业部(USDA)、食品和药物管理局(FDA)和环境保护署(EPA)。美国农业部确认保铃棉不是有害植物,把它列为毋需控制的产品。食品药物管理局确定保铃棉及其产品作为食品的饲料,具有其他棉株同样的安全性和营养价值。环境保护署将棉株的杀虫毒蛋白含量列为“安全”级,免除耐量要求。
(I) Approval of boll cotton: After 6 years of multi-point field trials, boll bolting was finally allowed to enter commercial production in the United States in 1996. During these six years of trials, boll cotton not only showed excellent insect resistance and high yield under a wide range of environmental conditions, but also successfully passed the rigorous scrutiny of three U.S. authorities, each of which Yes USDA, FDA and EPA. USDA confirms that bollworm is not a harmful plant and lists it as an uncontrolled product. FDA identified cotton bolls and their products as feedstuffs for food, with the same safety and nutritional value as other cotton plants. The Environmental Protection Department lists the insecticidal protein content of cotton plants as “safe ” grade, exempt from tolerance requirements.