基于尼科硫和S-甲基甲的除草剂对非目标植物的生态毒性
Rafaela Carvalho de Souza1, Leonardo Mendes Silva1, Murilo Jovino Moraes1
1Laboratory of Eco(geno)toxicology and Cytogenetics, Department of Ecology and Conservation, Institute of Natural Sciences (icn@ufla.br), Federal University of Lavras (reitoria@ufla.br), Lavras, Brazil.
概括
两种常见的除草剂,尼科苏尔和S-甲基,对植物发育产生负面影响. 这些除草剂抑制了测试作物的发芽和生长,凸显了对非标生物的环境问题.
科学领域:
- 农业科学 农业科学
- 环境毒理学环境毒理学
- 植物科学 植物科学
背景情况:
- 农业广泛使用除草剂引发了环境和非标生物的安全问题.
- 尼科硫是一种出现后的除草剂;S-metolachlor是一种出现前的除草剂,两者都用于密集作物种植.
研究的目的:
- 评估基于尼科苏尔和S-甲醇的除草剂的植物毒性作用.
- 评估对模型植物物种早期发育阶段的影响:生菜,卜,小米和小麦.
主要方法:
- 在四种植物物种上进行了发芽生物测试.
- 对幼苗的发展进行了监测,以评估生长和新鲜体重.
- 测试了两种含有尼科苏尔和S-甲基的商业除草剂配方.
主要成果:
- 所有测试的植物模型都显示了对这两种除草剂的植物毒性反应.
- 观察到受阻发芽,发芽速度降低,苗木生长受损.
- 小麦 (Triticum aestivum) 是最敏感的;卜 (Raphanus sativus) 最少受到影响.
结论:
- 尼科硫和S-甲基甲除草剂对非目标植物具有显著的植物毒性作用.
- 这些发现为了解这些广泛使用的除草剂对环境的影响提供了关键数据.
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