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<p>A greenhouse pot experiment investigated the effects of zinc application rates (600–1200&#xa0;mg/kg) on <i>Mentha arvensis</i> L.‘s morphology (plant height and fresh weight), aroma quality, and zinc uptake. The selected Zn levels represent reasonable contamination overview which allows assessment of plant responses under extreme metal stress condition. After 90 days, aerial parts underwent essential oil extraction and GC/GC-MS analysis. All the measured data was performed in triplicate and analyzed using statistical tools. Physicochemical properties and zinc accumulation in soil, plant and oil were also documented. At increased zinc levels, the major component; menthol content increased while the height of the plant decreased. Thus, demonstrating the plant’s ability to thrive in metal-contaminated conditions. Essential oil yield remained stable in Zn<sub>800</sub> (0.6%) and Zn<sub>1000</sub> (0.6%) amendments but decreased at higher level of zinc amendment (Zn<sub>1200</sub>) (0.4%). Zinc accumulation (20–50&#xa0;mg kg<sup>− 1</sup>) remained below permissible limits (50&#xa0;mg kg<sup>− 1</sup>). Although, total zinc removal efficiency was not quantified in the present study, the observed metal uptake and plant tolerance indicate the potential of <i>M. arvensis</i> L. for Phyto-stabilization and safe utilization of zinc-contaminated soils, warranting further investigation.</p>

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Variation in the morphological characters, essential oil content and composition of Mentha arvensis L. grown in zinc enriched soils

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月22日

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  • Mamta Bisht,
  • Chitra Pande,
  • Geeta Tewari,
  • Sonal Tripathi,
  • Anupriya Adhikari

摘要

A greenhouse pot experiment investigated the effects of zinc application rates (600–1200 mg/kg) on Mentha arvensis L.‘s morphology (plant height and fresh weight), aroma quality, and zinc uptake. The selected Zn levels represent reasonable contamination overview which allows assessment of plant responses under extreme metal stress condition. After 90 days, aerial parts underwent essential oil extraction and GC/GC-MS analysis. All the measured data was performed in triplicate and analyzed using statistical tools. Physicochemical properties and zinc accumulation in soil, plant and oil were also documented. At increased zinc levels, the major component; menthol content increased while the height of the plant decreased. Thus, demonstrating the plant’s ability to thrive in metal-contaminated conditions. Essential oil yield remained stable in Zn800 (0.6%) and Zn1000 (0.6%) amendments but decreased at higher level of zinc amendment (Zn1200) (0.4%). Zinc accumulation (20–50 mg kg− 1) remained below permissible limits (50 mg kg− 1). Although, total zinc removal efficiency was not quantified in the present study, the observed metal uptake and plant tolerance indicate the potential of M. arvensis L. for Phyto-stabilization and safe utilization of zinc-contaminated soils, warranting further investigation.