The Efficiency of Nanoparticles on Improving Seed Germination and Mitigating Ammonium Stress of Water Spinach ( Ipomoea aquatica Forssk.) and Hami Melon ( Cucumis melo L.)

Tianhao Wu, Ganghua Zou, Xuecheng Lan, Guangxu Zhang, Ying Shan, Beibei Liu, Zheli Ding, Thiago Assis Rodrigues Nogueira, Muhammad Nawaz, Fengliang Zhao (), Zainul Abideen and Zhenli He
Additional contact information
Tianhao Wu: National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
Ganghua Zou: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Xuecheng Lan: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Guangxu Zhang: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Ying Shan: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Beibei Liu: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Zheli Ding: Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Thiago Assis Rodrigues Nogueira: Department of Agricultural Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
Muhammad Nawaz: Department of Environmental Sciences, Bahauddin Zakariya University, Multan 60801, Pakistan
Fengliang Zhao: Environmental and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
Zainul Abideen: Dr. Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization, University of Karachi, Karachi 75270, Pakistan
Zhenli He: Department of Soil, Water, and Ecosystem Science/Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL 34945, USA

Sustainability, 2023, vol. 15, issue 13, 1-14

Abstract: Nitrogen, despite being essential for the growth of plants, can pose serious threats to the ecological environment when applied excessively as fertilizers. The application of nanomaterials has a catalytic effect on crop growth and a restorative effect on the environment. However, their effect on mitigating ammonium stress in crops is poorly understood. In the present study, the roles of nanoparticles of magnesium oxide (nMgO) and hydroxyapatite (nHA) with different application rates (0, 10, 100, 500, and 1000 mg L −1 ) on seed germination and seedling growth in water spinach ( Ipomoea aquatica Forssk.) and Hami melon ( Cucumis melo L.) were investigated, and the ammonium stress mitigating capacity of nanoparticles with the optimal application rate on the two crops was analyzed. The results showed that the application of nMgO and nHA at an optimal rate of 100 mg L −1 significantly promoted seed germination of water spinach, followed by the increase of germination potential, seed germination rate, and germination index, while alleviating the inhibitory effect of NH 4 + stress in water spinach. As for the Hami melon, nHA reduced the ammonium stress on seedlings by promoting antioxidant enzyme activity, while nMgO was found to be involved in reducing the root growth of Hami melon seedlings. This study provided a reference on how to select the appropriate type and optimize the application method of nanomaterials that will be used in agriculture in the future.

Keywords: nanomaterials; seed germination; ammonium stress; enzymatic activity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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