Agronomy Department, Federal University of Technology -Parana (UTFPR), Paraná, Brazil.
Agronomy Department, Federal University of the Southern Frontier (UFFS), Erechim, Rio Grande do Sul, Brazil.
J Environ Sci Health B. 2021;56(8):706-721. doi: 10.1080/03601234.2021.1940659. Epub 2021 Jun 30.
In the bean crop there are limited options of herbicides to control eudicotyledons weeds in pre-emergence and sulfentrazone presents potential to be used in a weed management program. The aim of this study was to determine the tolerance of a large number of Brazilian bean genotypes to sulfentrazone and their relation with morphophysiological characteristics, associating it to market classes, seed size and their center of origin. It was evaluated the effect of sulfentrazone application (400 g a.i. ha) in pre-emergence of 40 Brazilian bean genotypes, 36 of which were common-bean (), two cowpeas (), one adzuki bean () and one mung bean (). There was high tolerance variation of the genotypes to sulfentrazone. Morphological parameters were strongly related with relative tolerance. Common bean genotypes that had medium to large seed size (cranberry and carioca) were more tolerant, while small-sized seed genotypes were more sensitive (black). Andean genotypes were more tolerant than Mesoamerican genotypes. Within the Mesoamerican group, medium-sized seed genotypes (carioca beans) were more tolerant than small-sized seed (black beans). Considering only the genera, cowpea was highly tolerant to sulfentrazone, while mung bean showed intermediary response and adzuki bean was completely sensible.
在豆类作物中，用于防除阔叶杂草的除草剂选择有限，而磺草酮具有成为杂草管理方案中一种选择的潜力。本研究的目的是确定大量巴西豆基因型对磺草酮的耐受性及其与形态生理特征的关系，并将其与市场类别、种子大小及其起源中心相关联。评估了磺草酮（400 g a.i. ha）在 40 个巴西豆基因型中的前萌发期的应用效果，其中 36 个是普通菜豆（）、两个豇豆（）、一个小豆（）和一个绿豆（）。基因型对磺草酮的耐受性存在很大差异。形态参数与相对耐受性密切相关。具有中到大种子大小的普通菜豆基因型（蔓越莓和 carioca）更为耐受，而小种子基因型则更为敏感（黑）。安第斯山脉的基因型比中美洲的基因型更为耐受。在中美洲群体中，中到大种子大小的基因型（carioca 豆）比小种子大小的基因型（黑豆）更为耐受。仅考虑豆科植物，豇豆对磺草酮具有高度耐受性，而绿豆表现出中等反应，小豆则完全敏感。
