【摘要】 【目的】评价美国孟山都公司生产的抗草甘膦转基因大豆40-3-2作为加工原料引入中国可能带来的演化为杂草的生态风险,验证转基因大豆杂草化环境安全评价条款的可操作性。【方法】在农田生态环境下比较了抗性大豆、受体品种和当地常规品种的生存竞争能力、繁育能力、自生苗、种子落粒性和延续能力。【结果】在适宜季节种植的转基因大豆的生存竞争能力和繁育能力明显低于当地常规品种,表现在复叶数少、植株较矮、结实率低;受体品种的生存竞争能力和常规品种相似,但繁育能力低于常规品种。在非适宜季节三者的生存竞争能力相似,而受体品种和抗性大豆的结实能力都比常规品种略强。3个品种的落粒性都不强,形成自生苗的可能性也都很小。所有供试大豆种子的延续能力都很弱。【结论】以上研究结果表明美国孟山都公司生产的抗草甘膦转基因大豆40-3-2在中国南京地区环境条件下演化为杂草的可能性较小,其作为加工原料进口后演化为杂草的生态风险小。试验证实了转基因大豆环境安全评价标准的杂草性条款具有可操作性。更多还原

【Abstract】 【Objective】 To assess the potential ecological risk for weediness of transgenic soybean 40-3-2,which was introduced as production raw material for edible oil,and to verify the operation of clauses for weediness assessment of transgenic soybean in China.【Method】 In the field,the surviving competition ability(including germination rate,plant height,leaf number),reproducing ability(the number of flowers,legumes,and seeds per plant),volunteer possibility,seed shattering and persisting possibility of transgenic glyphosate-resistant soybean 40-3-2,recipient variety and conventional soybean varieties were comparatively evaluated.【Result】 The surviving competition ability of transgenic glyphosate-resistant soybean was less than that of conventional soybean variety which was similar with that of recipient soybean in appropriate season.However,the surviving competition ability of three soybean varieties was similar in appropriate season.The number of flowers was also similar among the three varieties in appropiate season,but the number of legumes and seeds per plant of transgenic glyphosate-resistant soybean and recipient soybean were less than that of conventional soybean variety in appropriate season.The number of flowers,legumes and seeds per plant of conventional soybean variety were a little bit less than that of transgenic glyphosate-resistant soybean and recipient soybean in unfavorable one.The seed shattering and persisting ability of all experimental soybean varieties were weak.And no volunteer plant was observed in experimental period.【Conclusion】 It is concluded that the transgenic glyphosate-resistant soybean from Monsanto Company had lowest potential weediness when it was planted or was imported as production raw materials for edibleoil in Nanjing,China.It was verified that the items on weediness in the evaluation standard of environmental safety are practical through the field trial.更多还原