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<p><i>Ampelodesmos mauritanicus</i> is an important perennial grass native to Mediterranean pastoral lands. Despite its significance, limited knowledge exists regarding how environmental factors influence its germination ecology and potential distribution. This study aimed to determine the interactive effects of temperature regimes, light quality, salinity, water stress, and seed sowing depth on seed germination and seedling establishment of <i>A. mauritanicus</i>. Laboratory experiments demonstrated that germination was optimal at lower thermoperiod (10/20&#xa0;°C) compared to higher thermoperiod (15/25&#xa0;°C), indicating adaptation to Mediterranean winter conditions. Germination of seeds was unaffected by varying light conditions at 10/20&#xa0;°C, while high light intensity significantly reduced germination success at the warmer thermoperiod. Darkness effectively alleviated the detrimental impacts of salinity and water stress. Salinity and water stress progressively reduced the fresh weight and growth of seedlings, with roots exhibiting greater sensitivity to salinity than to shoots. Notably, seeds displayed moderate to high resilience, recovering their germination capability (&gt; 50%) upon alleviation of both stresses. Optimal seedling emergence was recorded at shallow sowing depths of 0.75–1.5&#xa0;cm, particularly for husked seeds. These insights highlight the resilience of <i>A. mauritanicus</i> under climate-driven stressors, providing a valuable basis for its effective utilization at reversing pastoral land degradation in Mediterranean.</p>

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Exploring the effects of environmental factors on the initial development of the valuable Mediterranean forage grass Ampelodesmos mauritanicus: A prime candidate for mitigating pastoral land degradation

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Mohammed Dadach,
  • Ali El-Keblawy,
  • Abdul Hameed,
  • Sanjay Gairola,
  • François Mitterand Tsombou

摘要

Ampelodesmos mauritanicus is an important perennial grass native to Mediterranean pastoral lands. Despite its significance, limited knowledge exists regarding how environmental factors influence its germination ecology and potential distribution. This study aimed to determine the interactive effects of temperature regimes, light quality, salinity, water stress, and seed sowing depth on seed germination and seedling establishment of A. mauritanicus. Laboratory experiments demonstrated that germination was optimal at lower thermoperiod (10/20 °C) compared to higher thermoperiod (15/25 °C), indicating adaptation to Mediterranean winter conditions. Germination of seeds was unaffected by varying light conditions at 10/20 °C, while high light intensity significantly reduced germination success at the warmer thermoperiod. Darkness effectively alleviated the detrimental impacts of salinity and water stress. Salinity and water stress progressively reduced the fresh weight and growth of seedlings, with roots exhibiting greater sensitivity to salinity than to shoots. Notably, seeds displayed moderate to high resilience, recovering their germination capability (> 50%) upon alleviation of both stresses. Optimal seedling emergence was recorded at shallow sowing depths of 0.75–1.5 cm, particularly for husked seeds. These insights highlight the resilience of A. mauritanicus under climate-driven stressors, providing a valuable basis for its effective utilization at reversing pastoral land degradation in Mediterranean.