Santos Géssica Aline Nogueira Dos, Scherer Filho Celso, Schimpl Flávia Camila, Souza Sarah Caroline Ribeiro de, Nina Junior Adamir da Rocha, Garcia Rebeca Patrícia Omena, Silva José Ferreira da
Post-graduation Program in Tropical Agronomy, Federal University of Amazonas, Manaus, Amazonas, Brazil.
Post-graduation Program in Animal Science, Federal University of Amazonas, Manaus, Amazonas, Brazil.
J Environ Sci Health B. 2023;58(1):69-79. doi: 10.1080/03601234.2023.2172275. Epub 2023 Feb 6.
Guarana ( Kunth var. ) is a typically Amazonian plant of high economic value due to the compounds found in its seed. For guarana to reach the maximum productive potential, management practices such as weed control are necessary. The use of herbicides is a viable alternative, however, its drift may lead to adverse effects on the primary and secondary plant metabolisms and cause losses in crop production. This study evaluated the differential drift effects of glyphosate doses on the physiology of guarana plants and the production of compounds of economic interest in their seeds. Glyphosate doses (57.6, 115.2, 230.4, 460.8 g ae ha) were applied to adult guarana plants after the flowering period. The photosynthetic functions and metabolism effects were evaluated. Herbicide treatments led to oxidative stress due to increased lipid peroxidation and increased carbohydrate and amino acid in their leaflets. Despite this, glyphosate showed no effect on fruit production or the content of secondary metabolites of commercial interest in seeds.
瓜拉那（昆斯变种）是一种典型的亚马逊植物，因其种子中含有的化合物而具有很高的经济价值。为使瓜拉那达到最大生产潜力，诸如杂草控制等管理措施是必要的。使用除草剂是一种可行的选择，然而，其漂移可能会对植物的初级和次级代谢产生不利影响，并导致作物产量损失。本研究评估了草甘膦剂量对瓜拉那植物生理学及其种子中具有经济价值化合物产量的差异漂移效应。在花期过后，将草甘膦剂量（57.6、115.2、230.4、460.8克酸当量/公顷）施用于成年瓜拉那植物。对光合功能和代谢效应进行了评估。除草剂处理由于脂质过氧化增加以及小叶中碳水化合物和氨基酸增加而导致氧化应激。尽管如此，草甘膦对果实产量或种子中具有商业价值的次生代谢产物含量没有影响。
