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转Cry1Ab/Ac基因水稻对稻田底栖动物群落的生态安全性

, PP. 715-723

Keywords: Cry1Ab/Ac基因,转基因抗虫水稻,底栖动物群落,生态安全

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Abstract:

为探究转Bt基因抗虫水稻对稻田水生生物的安全性,以转Cry1Ab/Ac基因抗虫水稻华恢1号(HH1)为材料,其非转基因水稻亲本明恢63(MH63)为对照,以底栖动物群落为指示生物,运用群落学方法研究了湖南湘潭转Bt水稻对稻田底栖动物群落的影响。结果显示,2012年在HH1与MH63稻田中,分别采集到底栖动物37种和38种,二者共有物种31种,群落物种相似度为0.8267,优势种相似度为0.8235;2013年在HH1与MH63稻田中分别采集到底栖动物40种和41种,二者共有物种33种,群落物种相似度为0.8148,优势种相似度为0.9231;2012与2013年在HH1与MH63稻田生境中,物种丰富度、个体数量、群落多样性指数、均匀性指数与优势集中性指数的时间动态趋势一致,且均无显著差异。研究表明,连续2年稻田种植转Cry1Ab/Ac基因抗虫水稻HH1,在群落水平上对湖南湘潭地区稻田底栖动物无显著影响。

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