| 王富芸,赵尔成,裴涛,潘薇,赵晓军,孟致衡,李莉.吡噻菌胺对映体在水培黄瓜体系中的选择性吸收与传导行为[J].农业环境科学学报,2025,44(5):1225-1232. |
| 吡噻菌胺对映体在水培黄瓜体系中的选择性吸收与传导行为 |
| Enantioselectivity uptake and translocation of penthiopyrad enantiomers in hydroponic cucumber system |
| 投稿时间：2024-04-20 |
| DOI：10.11654/jaes.2024-0335 |
| 中文关键词: 吡噻菌胺 分布 吸收 传导 选择性 |
| 英文关键词: penthiopyrad distribution uptake translocation enantioselective |
| 基金项目:国家自然基金面上基金项目（32272570）；山西省蔬菜产业技术体系建设项目（2024CYJSTX）；山西省博士毕业生来晋工作科研项目（SXBYKY2022055） |
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| 中文摘要: |
| 为探究吡噻菌胺对映体在水培黄瓜植株中的选择性行为，本文基于构建的水培黄瓜种植体系，研究吡噻菌胺对映体在黄瓜根、茎、叶及营养液中的吸收、传导、降解及分布。结果表明：处理组营养液（培育黄瓜植株含药营养液）中目标农药降解符合一级动力学方程，且快于对照组（含药营养液），对映体分数在0.49~0.51之间，不具显著选择性。黄瓜植株可快速吸收营养液中的吡噻菌胺对映体，根部富集因子均大于1 L·kg-1，最大可达13.12 L·kg-1，转运因子在0.014~0.158之间，表明其具有较强的根部富集能力和较弱的向上转移能力。对映体在黄瓜根、茎、叶中的对映体分数值在0.50~0.59之间，表明其在黄瓜植株中的吸收与传导具有显著的选择性。研究表明，吡噻菌胺对映体在营养液中不具选择性，在黄瓜植株中具有显著选择性，且易在根部富集，不易向上传导。 |
| 英文摘要: |
| To investigate the enantioselective behavior of penthiopyrad（PEN）enantiomers in cucumber, a hydroponic cucumber system was established to study the selective uptake, translocation and distribution of PEN in roots, stems, leaves and nutrient solution in this study. The results showed that the dissipation of PEN in nutrient solution of the treatment group（the nutrient solution containing pesticides and cultivating cucumber plant）was in accordance with the first-order kinetic equation, and was faster than that of the control group（the nutrient solution containing pesticides）. The enantiomer fraction（EF）was between 0.49 and 0.51, indicating that there was no significant selectivity. PEN in the nutrient solution can be rapidly absorbed by cucumber roots and the root concentration factor were greater than 1 L· kg-1, with the peak value of 13.12 L·kg-1. The translocation factor was between 0.014 and 0.158, indicating that cucumber had a stronger ability of root enrichment and weak above-ground translocation ability. EF values in cucumber plants ranged from 0.50 to 0.59, which showed that the uptake and translocation of PEN had significant enantioselectivity. In summary, PEN enantiomers showed no enantioselectivity in nutrient solution but displayed significant enantioselectivity in cucumber plants, preferentially accumulating in roots with minimal upward translocation. |
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