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The Effect of Zinc Oxide Nanoparticles for Enhancing Rice ( Oryza sativa L.) Yield and Quality

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  • Haipeng Zhang

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China
    Both authors contributed equally to this work.)

  • Rui Wang

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China
    Both authors contributed equally to this work.)

  • Zhiqing Chen

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China)

  • Peiyuan Cui

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China)

  • Hao Lu

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China)

  • Yanju Yang

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China)

  • Hongcheng Zhang

    (Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Jiangsu Key Laboratory of Crop Cultivation and Physiology, Yangzhou University, Yangzhou 225009, China)

Abstract

Zinc oxide nanoparticles (ZnO NPs) have been applied widely in agriculture, and many studies were conducted to evaluate the effect of ZnO NPs on plant growth. So far, few studies have been investigated with regard to the potential effect of ZnO NPs on cereal yield formation or Zn content in grains. Herein, we used a pot experiment, which was conducted involving five dosages of Zn (0.3, 0.6, 1.2, 2.4, and 4.8 g Zn pot −1 ), to evaluate the impacts which ZnO NPs made in rice yield, dry matter accumulation, rice quality and grain Zn contents. The results demonstrated that ZnO NPs increased the production of grain, dry matter accumulation and particulate Zn content. Compared with control treatment, ZnO NPs application presented higher rice yield with more panicle number (4.83–13.14%), spikelets per panicle (4.81–10.69%), 1000-grain weight (3.82–6.62%) and filled grain rate (0.28–2.36%). Additionally, the dry jointing, heading and mature periods, LAI, SPAD values, and photosynthetic potentials of ZnO NPs were all significantly higher relative to treatment without ZnO NPs. The more photosynthetic substances and higher dry matter accumulated in the whole rice growing stage resulted in higher rice grain yield. Furthermore, ZnO NPs increased brown rice rate, milled rice rate, head rice rate, chalkiness size, chalkiness grain rate, chalkiness degree, amylose content and protein content, improving rice processing and appearance qualities. For the Zn nutrition in rice grain, ZnO NPs application significantly increased the Zn content of edible polished rice and promoted the relocation of Zn from the aleurone layer. This study effectively demonstrated that ZnO NPs could be a potential high-performed fertiliser for enhancing rice yield and quality.

Suggested Citation

  • Haipeng Zhang & Rui Wang & Zhiqing Chen & Peiyuan Cui & Hao Lu & Yanju Yang & Hongcheng Zhang, 2021. "The Effect of Zinc Oxide Nanoparticles for Enhancing Rice ( Oryza sativa L.) Yield and Quality," Agriculture, MDPI, vol. 11(12), pages 1-11, December.
  • Handle: RePEc:gam:jagris:v:11:y:2021:i:12:p:1247-:d:698649
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    References listed on IDEAS

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    1. Yajie Hu & Shumin Cong & Hongcheng Zhang, 2021. "Comparison of the Grain Quality and Starch Physicochemical Properties between Japonica Rice Cultivars with Different Contents of Amylose, as Affected by Nitrogen Fertilization," Agriculture, MDPI, vol. 11(7), pages 1-15, June.
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    Cited by:

    1. Abhishek Singh & Rakesh Singh Sengar & Vishnu D. Rajput & Tatiana Minkina & Rupesh Kumar Singh, 2022. "Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices," Agriculture, MDPI, vol. 12(7), pages 1-21, July.

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