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1 优良转基因抗虫棉能十分有效地控制棉铃虫的危害抗虫棉主要有4种,即形态抗虫棉、生化抗虫棉、生态抗虫棉和基因抗虫棉。从1995～1998年我们先后从全国不同育种单位引进了22个形态抗性、生态抗性和基因抗性的抗虫棉新品系,从中国农科院生物技术中心引进了我国自己合成与导入成功的3个“863”转基因抗虫棉品系材料,采用系统选育法,选育出一个国内转基因抗虫棉新品种国抗12号。通过连续多年、多点次的对比、试验与鉴定,发现形态抗虫棉、生态抗虫棉虽然具有一定的抗虫或避虫效果,但在棉铃
1 Good transgenic insect-resistant cotton can effectively control the harm of cotton bollworm There are 4 main types of insect-resistant cotton, that is, morphological insect-resistant cotton, biochemical insect-resistant cotton, ecological insect-resistant cotton and gene cotton. From 1995 to 1998, we introduced 22 new varieties of resistant cotton with morphological resistance, ecological resistance and genetic resistance from different breeding units nationwide. We successfully introduced our own synthesis and import from the Biotechnology Center of Chinese Academy of Agricultural Sciences Three “863” transgenic lines of insect-resistant cotton were selected. A new breed of transgenic Bt cotton, Guokang 12, was bred by systematic breeding method. Through years of continuous, multi-point comparison, testing and identification, it was found that morphological insect-resistant cotton and ecological insect-resistant cotton have certain insect-resistant or insect-