Scholarlink

<p>Moisture stress is one of the detrimental abiotic stressors that impacts growth and productivity of finger millet. This study investigated the plant biological responses of finger&#xa0;millet in various intensity of drought (0&#xa0;bar, -5&#xa0;bar, -6&#xa0;bar, -7&#xa0;bar and -8&#xa0;bar) induced by PEG 6000 and nano priming treatment with SiO₂ nano particles. The&#xa0;findings indicate that increasing moisture stress significantly reduces all seed and seedling quality parameters. Under non-moisture stress conditions (0&#xa0;bar), germination reached 82%, whereas severe moisture stress (-8&#xa0;bar) led to a dramatic decrease to 41%. As moisture stress intensified, there was a corresponding decline in germination rates and seedling quality parameters characterized by seedling length, dry matter production, and vigor. The biochemical attributes such as tissue water content and chlorophyll pigment diminished significantly whereas electrolyte leakage and proline elevated under increasing moisture stress. Among the different ranges of drought, the optimal stress level (-7&#xa0;bar) was selected based on germination percent (≤ 65% and ≥ 50%) to assess the response of finger millet to SiO₂ nano priming treatment under that stress condition. The results revealed that control seeds exhibited 82% germination in non-stress (0&#xa0;bar) conditions, which dropped to 62% under -7&#xa0;bar stress. In contrast, seeds primed with SiO₂ nanoparticles @ 500&#xa0;mg/L registered 96% germination, 13.4&#xa0;cm root length under non-stress and 85% germination, 11.3&#xa0;cm root length under -7&#xa0;bar stress condition. Primed seeds also exhibited maximum tissue water content in shoot (84.2%), root (88.6%), total chlorophyll content (9.35&#xa0;µg/g) and also enhanced the proline accumulation and antioxidants such as catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD), under moisture stress. These results highlight the potential of SiO₂ nanoparticle priming to enhance resilience in finger millet against moisture stress by promoting better germination, seedling vigour and antioxidant enzyme activity.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Nano Silicon as a Potential Seed Priming Agent for Enhancing Resilience against Moisture Stress in Finger Millet (Eleusine coracana L.)

  • 期刊论文

  • 发表日期：

    2025年3月1日

查看全文
  • Kathiravan Muthuselvan,
  • Vanitha Chinnapaiyan,
  • Umarani Renganathan,
  • Poovarasu Kesavamoorthy,
  • Gayathry Gunavijayan,
  • Sathiya Kumaresan,
  • Yuvaraj Muthuraman,
  • Ayyadurai Pachamuthu

摘要

Moisture stress is one of the detrimental abiotic stressors that impacts growth and productivity of finger millet. This study investigated the plant biological responses of finger millet in various intensity of drought (0 bar, -5 bar, -6 bar, -7 bar and -8 bar) induced by PEG 6000 and nano priming treatment with SiO₂ nano particles. The findings indicate that increasing moisture stress significantly reduces all seed and seedling quality parameters. Under non-moisture stress conditions (0 bar), germination reached 82%, whereas severe moisture stress (-8 bar) led to a dramatic decrease to 41%. As moisture stress intensified, there was a corresponding decline in germination rates and seedling quality parameters characterized by seedling length, dry matter production, and vigor. The biochemical attributes such as tissue water content and chlorophyll pigment diminished significantly whereas electrolyte leakage and proline elevated under increasing moisture stress. Among the different ranges of drought, the optimal stress level (-7 bar) was selected based on germination percent (≤ 65% and ≥ 50%) to assess the response of finger millet to SiO₂ nano priming treatment under that stress condition. The results revealed that control seeds exhibited 82% germination in non-stress (0 bar) conditions, which dropped to 62% under -7 bar stress. In contrast, seeds primed with SiO₂ nanoparticles @ 500 mg/L registered 96% germination, 13.4 cm root length under non-stress and 85% germination, 11.3 cm root length under -7 bar stress condition. Primed seeds also exhibited maximum tissue water content in shoot (84.2%), root (88.6%), total chlorophyll content (9.35 µg/g) and also enhanced the proline accumulation and antioxidants such as catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD), under moisture stress. These results highlight the potential of SiO₂ nanoparticle priming to enhance resilience in finger millet against moisture stress by promoting better germination, seedling vigour and antioxidant enzyme activity.