作　　者： ; ; ; ;

机构地区： 中国农业科学院

出　　处： 《应用生态学报》 2003年第3期443-446,共4页

摘　　要： 评述了转Bt基因抗虫棉的生态风险及治理对策 .其生态风险主要表现在目标害虫的抗性和对非目标生物群落的变化 .目标害虫与转基因抗虫棉的互相作用和抗虫棉杀虫毒素的时空表达方式是目标害虫抗性发展的主要途径 .在转基因抗虫棉田中 ,虽然对目标害虫的防治次数大为减少 ,但害虫和天敌群落的稳定性仍不如常规棉田 ,某种次要害虫大发生的可能性较大 . There may be several ecological impacts induced by transgenic cottons, apart from their direct impact on target pest. The interactions between target insect and transgenic cotton, and the way of toxic expressed by transgenic cotton varied with plant spatial parts and different growing stages are regarded as the main cause for insect to develop resistance. In transgenic cotton field, although chemicals applied to control major insect pest could be reduced greatly, insect community structure including insect pests and beneficial organisms is less stable than that of regular cotton field. It is much easier for minor insect pests developing to be major pest. In order to full utilization of transgenic cottons and keep their efficiency on target pest, methods including integrated pest management and breeding higher efficincy transgenic cottons by genetic engineering are proposed for management of pest resistance and non target pests.

关 键 词： 抗虫棉 生态风险 抗虫性 害虫综合治理 安全性评价

领　　域： [生物学] [生物学]