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首页> 外文期刊>African Journal of Biotechnology >Short-term phyto-toxicity consequences of a non-selective herbicide glyphosate (Roundup) on the growth of onions (Allium cepa Linn.)
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Short-term phyto-toxicity consequences of a non-selective herbicide glyphosate (Roundup) on the growth of onions (Allium cepa Linn.)

机译：非选择性除草剂草甘膦（Roundup）对洋葱（Allium cepa Linn。）生长的短期植物毒性作用

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This study examined the phyto-toxic effects of a commonly named non-selective herbicide glyphosate (Roundup?) on onions (Allium cepa Linn.). The study was necessitated due to the indiscriminate use and release of Roundup? for weed control in the Niger Delta soils of Nigeria. The Organisation for Economic Co-operation and Development (OECD) standard protocol # 208 was adopted. The short-term phyto-toxic consequence on onion (A. cepa L.) was determined after a 4-day exposure to varying concentrations of the test chemical at 0.625, 1.25, 2.5, 5 and 10 mg/L, respectively. The percentage growth rate decreased as percentage growth rate inhibition efficiency increased, which implies that the effect of the herbicide was concentration dependent. The mean percentage growth rate inhibition efficiency relative to the control was 28, 47, 61, 73 and 96%, respectively. The effective concentration (EC50) for % Inhibition efficiency was 1.550 mg/L with a 95% confidence interval of 1.269 to 1.848 mg/L. The biological alterations on the onions in the test solutions varied in order of increasing concentrations. Some observations made include decolouration of the test solutions and stunted growth especially at the highest concentration of 10 mg/L. Other effects include: bulb deformation, tissue and root damage. There was significant difference between the exposed species and the control at P < 0.05. The use of the herbicide Roundup? with such hazardous effects can harm plants especially onion which is a very viable food product of man. This could lead to likely distortion on the ecosystem balance of onions (A. cepa) and similar plants and subsequent effect on human, the major end user.
机译：这项研究检查了通常命名的非选择性除草剂草甘膦（Roundup？）对洋葱（葱属洋葱）的植物毒性作用。由于不加选择地使用和释放Roundup？在尼日利亚的尼日尔三角洲土壤中除草。通过了经济合作与发展组织（OECD）标准协议208。在分别暴露于0.625、1.25、2.5、5和10 mg / L的不同浓度的测试化学品下4天后，确定了对洋葱（A. cepa L.）的短期植物毒性作用。随着百分比生长速率抑制效率的增加，百分比生长速率降低，这表明除草剂的作用是浓度依赖性的。相对于对照，平均增长率抑制效率百分比分别为28％，47％，61％，73％和96％。抑制％效率的有效浓度（EC50）为1.550 mg / L，95％置信区间为1.269至1.848 mg / L。测试溶液中洋葱的生物学变化以浓度递增的顺序变化。观察到的一些结果包括测试溶液的脱色和生长受阻，尤其是在最高浓度10 mg / L的情况下。其他影响包括：球茎变形，组织和根部损伤。暴露的物种与对照之间存在显着差异，P <0.05。使用除草剂综述具有这种有害作用会危害植物，尤其是洋葱，这是人类非常可行的食品。这可能会导致洋葱（A. cepa）和类似植物的生态系统平衡受到破坏，进而对主要的最终用户人类产生影响。

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