HU Yu-qi,LIU Jin-yue,SHENG Ze-wen,et al.Weediness Risk Assessment of Genetically Modified Soybeans MON 87701RR2Y and MON 87701[J].Soybean Science,2020,39(03):390-400.[doi:10.11861/j.issn.1000-9841.2020.03.0390]
转基因大豆MON 87701RR2Y和MON 87701杂草化的风险评估
- Title:
- Weediness Risk Assessment of Genetically Modified Soybeans MON 87701RR2Y and MON 87701
- Keywords:
- Genetically modified soybeans; Weediness; Safety assessment
- 文献标志码:
- A
- 摘要:
- 为评价转基因大豆MON 87701RR2Y和MON 87701的自身杂草化生态风险，在农田生态环境下研究2种转基因大豆、受体大豆和当地常规大豆的生存竞争力（出苗率、相对盖度、株高、叶龄）、繁育能力（生育期、产量）、自生苗、种子延续能力和落粒性以及对大豆田常用除草剂的耐性。结果表明：在适宜季节2种转基因大豆的生存竞争能力和繁育能力与受体大豆相当，且显著低于当地常规大豆，表现为植株较矮、复叶数少、产量低；在非适宜季节4种大豆竞争能力相似，4种大豆均没有形成自生苗，落粒性不强且种子的延续能力都很弱，4种大豆对乙草胺、精喹禾灵和乳氟禾草灵的耐性相当。研究结果表明在南京农田生态环境下，2种转基因大豆的生存竞争能力与受体大豆相似，低于当地常规大豆或与其相似，自身杂草化风险较小。
- Abstract:
- In order to assess the potential ecological risk for weediness of genetically modified (GM) soybeans MON 87701RR2Y and MON 87701, the GM soybeans, their recipient soybean and local conventional soybean variety were planted in the field of Nanjing. The surviving competition ability (including germination rate, relative coverage, plant height, leaf stage), reproducing ability (growth period, yield), volunteer possibility, seed shattering possibility, seed persisting possibility and conventional herbicide tolerance were comparatively evaluated. The results showed that the surviving competition ability and reproducing ability of the two GM soybeans were similar with their recipient soybean, and were less than the local conventional soybean in appropriate season. The surviving competition ability was similar among the four varieties in unfavorable season. No volunteer plant was observed in experimental period, and the seed shattering and persisting ability of the four experimental soybean varieties were weak. The tolerance of the two GM soybeans to acetochlor, quizalofop-p-ethyl and lactofen were similar with their recipient soybean and the conventional soybean. The results indicated that the two GM soybeans demonstrated the similar surviving competition ability to their recipient soybean, and similar or less compared with the local conventional soybean. Therefore, the two GM soybeans had the lowest potential of weediness.
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