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标题：Impact of Zn Nanoparticles Synthesized via Green and Chemical Approach on Okra (<i>Abelmoschus esculentus</i> L.) Growth under Salt Stress
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作者：Sara Zafar ; Zuhair Hasnain ; Nazia Aslam 等
期刊名称：Sustainability
印刷版ISSN：2071-1050
出版年度：2021
卷号：13
期号：7
页码：3694
DOI：10.3390/su13073694
语种：English
出版社：MDPI, Open Access Journal
摘要：The study investigated the green and chemical approaches for the preparation of Zn nanoparticles and their effect on the growth of okra plants under saline conditions. The leaf extract of <i>Sorghum bicolor</i> L. was used for the green synthesis of zinc nanoparticles (Zn-GNPs). Zinc nanoparticles (Zn-NPs) were also produced by the co-precipitation method (Zn-CNPs). The synthesized NPs were characterized by UV-visible spectroscopy, X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) and were applied foliarly in the range of 0.1%, 0.2%, 0.3% on okra plants. A marked increase in the shoot and root fresh and dry weight (g) and chlorophyll contents were observed under normal and saline conditions. An increase in antioxidant activity was observed under saline conditions. However, the foliar application of 0.3% Zn-GNPs was helpful in the regulation of the antioxidant defense system under a saline environment. Based on the results, it can be concluded that the use of Zn-GNPs is the most promising eco-friendly approach in mitigating salinity stress.
关键词：zinc nanoparticles; biological synthesis; sorghum extract; salinity stress; growth; okra