Impact of Zn Nanoparticles Synthesized via Green and Chemical Approach on Okra ( Abelmoschus esculentus L.) Growth under Salt Stress

Sara Zafar, Zuhair Hasnain, Nazia Aslam, Saqib Mumtaz, Hawa ZE Jaafar, Puteri Edaroyati Megat Wahab, Mughal Qayum and Alexe Nicolae Ormenisan
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Sara Zafar: Department of Botany, Government College University Faisalabad, Faisalabad, Punjab 38000, Pakistan
Zuhair Hasnain: Department of Agronomy, PMAS Arid Agriculture University, Punjab Rawalpindi 46000, Pakistan
Nazia Aslam: Department of Botany, Government College University Faisalabad, Faisalabad, Punjab 38000, Pakistan
Saqib Mumtaz: Department of Biosciences, COMSATS University Islamabad, Islamabad Capital Territory 45550, Pakistan
Hawa ZE Jaafar: Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Seri Kembangan 43400, Malaysia
Puteri Edaroyati Megat Wahab: Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Seri Kembangan 43400, Malaysia
Mughal Qayum: Department of Pharmacy, Kohat University of Science and Technology, Kohat 26000, Pakistan
Alexe Nicolae Ormenisan: Department of Food and Tourism Engineering and Management, Transilvania University of Brasov, 500036 Brașov, Romania

Sustainability, 2021, vol. 13, issue 7, 1-12

Abstract: 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 Sorghum bicolor 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.

Keywords: zinc nanoparticles; biological synthesis; sorghum extract; salinity stress; growth; okra (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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