The Impact of Zinc Nanoparticles on Rice Seed Germination

Introduction

The use of nanoparticles in agriculture is an emerging field, with the potential to enhance plant growth and resilience. Among these, zinc nanoparticles (Zn NP) play a crucial role in plant metabolism. This study explores the physiological impact of Zn NP on the germination of rice (Oryza sativa L.) and its potential applications in sustainable agriculture.

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Key Findings: Zinc Nanoparticles and Rice Germination

Growth Enhancement

• Exposure to varying concentrations of Zn NP (0 mg/L, 5 mg/L, 10 mg/L, 15 mg/L, 20 mg/L & 50 mg/L) significantly influenced radicle and plumule length.
• Fresh and dry mass of germinating seeds increased, with the highest impact at 15 mg/L concentration.
• Improved seed moisture content (SMC) contributed to enhanced germination rates.

Antioxidant Enzyme Activity

Zinc nanoparticles influenced the activity of key antioxidant enzymes, protecting rice seeds from reactive oxygen species (ROS) damage:

• Guaiacol peroxidase (GPx), catalase (CAT), superoxide dismutase (SOD), and glutathione reductase (GR) levels increased with Zn NP treatment.
• Higher enzyme activity helped regulate oxidative stress, enhancing germination efficiency.

External Insights: The Role of Zinc in Plant Growth

The International Zinc Association (IZA) highlights zinc’s critical role in plant nutrition, influencing photosynthesis, root development, and resistance to abiotic stress. Maintaining optimal Zn levels can boost crop yields and resilience.

DOI and Further Reading

For a comprehensive understanding of this study, read the full research at https://doi.com/10.29328/journal.jpsp.1001008.

Implications for Sustainable Agriculture

The study suggests that Zn NP-treated seeds show better potential for germination due to enhanced antioxidant defense mechanisms. Future research on genomic responses could further clarify Zn NP’s role in seedling vigor and stress tolerance.

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