Departamento de Engenharia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Diamantina, Brasil.
Departamento de Ciências Agrárias, Universidade Federal de Uberlândia-UFU, Monte Carmelo, Brasil.
Int J Phytoremediation. 2022;24(9):987-994. doi: 10.1080/15226514.2021.1991267. Epub 2021 Oct 19.
Hormone-like herbicides, used for large crops, can contaminate non-target areas with their waste. The objective of this study was to evaluate the tolerance of and to 2,4-D + picloram herbicides by means of morphological and anatomical evaluations. The experiment was performed in a greenhouse in a 4 × 2 factorial scheme. The first factor was the control (without herbicide) and three doses (0.166; 0.333, and 0.666 L ha) of the herbicide Tordon (402 g L 2,4-D + 103.6 g L picloram) and the second factor, the species and . The number of leaves was lower after treatment with the highest dose of the 2,4-D + picloram mixture. The herbicide rates did not influence the number of leaves. The higher dose of 2,4-D + picloram caused a more than 50% reduction in leaf area. Toxicity increased linearly as a function of the doses of the 2,4-D + picloram mixture. Changes in the leaf anatomy of the two species treated with herbicides were observed; however, the roots did not show any changes. and can be recommended for phytoremediation programs in areas contaminated by the herbicides 2,4-D + picloram.
激素类除草剂用于大型作物，可以将其废物污染到非目标区域。本研究的目的是通过形态和解剖学评估来评估 和 对 2,4-D+草甘膦除草剂的耐受性。该实验在温室中以 4×2 析因设计方案进行。第一个因素是对照（无除草剂）和三种剂量（0.166；0.333 和 0.666 L ha）的除草剂 Tordon（402 g L 2,4-D+103.6 g L 草甘膦），第二个因素是物种 和 。用最高剂量的 2,4-D+草甘膦混合物处理后， 的叶片数较低。除草剂剂量不影响 的叶片数。较高剂量的 2,4-D+草甘膦导致叶片面积减少超过 50%。毒性随 2,4-D+草甘膦混合物剂量的增加呈线性增加。观察到两种受除草剂处理的物种的叶片解剖结构发生变化；然而，根没有显示出任何变化。 和 可推荐用于受 2,4-D+草甘膦污染地区的植物修复计划。
