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转基因抗虫棉自原始材料被导入Ｂｔ基因起，经过２～３代实验室严格的单株抗虫鉴定之后，如何进一步鉴定田间量大的各世代转基因抗虫棉株行株系，沙洋农场农科所自１９９６年起与中国农科院生物技术中心合作进行转基因抗虫棉的田间选育工作，经过６个世代（海南加代）的实践研
Transgenic Bt cotton from the original material was introduced into the Bt gene, after 2 to 3 generations of laboratory stringent identification of individual insects, how to further identify large quantities of genetically modified lines of transgenic cotton lines, Shayang farm Since 1996, the Institute of Agricultural Science has cooperated with the Center for Biotechnology of Chinese Academy of Agricultural Sciences in the field breeding of transgenic insect-resistant cotton. After 6 generations (Hainan plus) practice