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Evolution of a herbicide-resistant population of Alopecurus myosuroides Huds. in a long-term cropping system experiment

机译:耐除草剂的棉铃虫种群的进化。在长期种植系统实验中

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Due to heavy reliance on herbicides and a lack of cultural control measures, herbicide-resistant populations of Alopecurus myosuroides Huds. (blackgrass) appeared in the early 1990s in winter cereal rotations in France and in Europe. The aim of the present study was to analyse the effects of different cropping systems on an aryloxy-phenoxypropionate herbicide-resistant population in a field trial. Two crop rotations, one consisting exclusively of winter crops and another including spring crops, were assessed over a six-year period. The rotations were combined with different cultural practices including mouldboard ploughing, delayed sowing, and efficient herbicides for controlling resistant plants. A. myosuroides densities decreased in all the cropping systems, but the weed management was most effective when herbicides were combined with non-chemical practices. Rotation with an alternation of spring and winter crops was the most efficient solution against A. myosuroides. Moreover, during the six years, the percentage of resistant plants in different crop rotations was estimated independently of the cropping systems. This proportion did not vary during the six years of the experiment, suggesting that the resistance gene persisted, despite the removal of selection pressure by the aryloxy-phenoxypropionate herbicides.
机译:由于对除草剂的严重依赖以及缺乏文化控制措施,耐除草剂的Aurocurus myosuroides Huds种群。 (黑草)出现在1990年代初期的法国和欧洲冬季谷物轮换中。本研究的目的是在田间试验中分析不同种植系统对耐芳氧基苯氧丙酸酯除草剂种群的影响。在六年期间评估了两次轮作,一次仅由冬季作物组成,另一次包括春季作物。将轮作与不同的文化习俗相结合,包括犁地犁,延迟播种和控制抗性植物的有效除草剂。在所有耕作系统中,棉铃虫的密度都下降了,但是当将除草剂与非化学方法结合使用时,杂草处理最为有效。春季和冬季轮作交替轮作是对抗棉铃虫的最有效方法。此外,在这六年中,估计了不同轮作中抗性植物的百分比,而与种植系统无关。该比例在实验的六年中没有变化,这表明尽管芳氧基-苯氧基丙酸酯除草剂消除了选择压力,但抗性基因仍然存在。

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