The growing production and wider application of metal nanoparticles gives rise to many concerns about their release to natural ecosystems. It is very important to be aware of the harmful impact of nanoparticles on living organisms, including plants. Therefore, it is of vital significance to explore the impact of metal nanoparticles on plants. This work assessed the phytotoxicity of bimetallic Ag/Au nanoparticles and Geum urbanum L. extract. The obtained bimetallic Ag/Au nanoparticles were characterized by UV–vis spectrophotometry (UV–vis), Transmission electron microscopy (TEM), Scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The microscopic studies enabled the determination of the size of the obtained nanoparticles, which was 50 nm. The wide range of concentrations evaluated in the course of the study made it possible to observe changes in selected plants (seeds of Lepidium sativum, Linum flavum, Zea mays, Solanum lycopersicum var. Cerasiforme and Salvia hispanica-Chia) caused by a stress factor. The studies showed that the solution of Ag/Au nanoparticles was most toxic to flax (IC50 = 9.83 × 10^–6/9.25 × 10^–6 mg/ml), and least toxic to lupine (IC50 = 1.23 × 10^–3/1.16 × 10^–3 mg/ml). Moreover, we studied the toxicity of Geum urbanum extract. The extracts diluted to 0.00875 mg/ml stimulated the growth of lupine, flax and garden cress; extracts diluted to 0.175 mg/ml stimulated the growth of Chia and tomatoes; and extracts diluted to 0.00875 mg/ml stimulated the growth of corn. G. urbanum extract was most toxic to lupine (IC50 = 0.374 mg/ml), and least toxic to corn (IC50 = 4.635 mg/ml).

金属纳米颗粒的不断增长的生产和广泛应用引起了人们对其向自然生态系统释放的担忧。注意纳米颗粒对包括植物在内的生物体的有害影响非常重要。因此，探索金属纳米颗粒对植物的影响至关重要。这项工作评估了双金属Ag / Au纳米颗粒和Geum urbanum的植物毒性。L.提取物。通过紫外可见分光光度法（UV-vis），透射电子显微镜（TEM），扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）对获得的双金属Ag / Au纳米颗粒进行了表征。显微镜研究使得能够确定所获得的纳米颗粒的尺寸，其为50nm。范围广泛的研究过程中评估的浓度使得有可能观察所选植物的种子的变化（独行菜豌豆，亚麻杆菌，玉米，番茄变种Cerasiforme和西班牙鼠尾草嘉）由压力因素引起。研究表明，Ag / Au纳米颗粒溶液对亚麻的毒性最高（IC50 = 9.83×10 ^–6 /9.25×10 ^–6  mg / ml），对羽扇豆的毒性最低（IC50 = 1.23×10 ^–3 /1.16 ×10 ^–3  mg / ml）。此外，我们研究了锦葵提取物的毒性。稀释至0.00875 mg / ml的提取物刺激了羽扇豆，亚麻和水芹的生长；稀释至0.175 mg / ml的提取物刺激了Chia和西红柿的生长；稀释至0.00875 mg / ml的提取物刺激了玉米的生长。G.urbanum提取物对羽扇豆毒性最大（IC50 = 0.374 mg / ml），对玉米毒性最小（IC50 = 4.635 mg / ml）。