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<p>Drought is a significant abiotic stress that can reduce the growth and development of maize. The present study was conducted to evaluate the role of thiourea (TU) on maize tolerance under drought stress conditions.&#xa0;For this purpose, a pot and field trial was conducted at the research area, Department of Agronomy, UAF. Maize hybrid FH-1036 and the four treatments, T0 = control, T1 = Soil applied 5&#xa0;kg ha<sup>−</sup>¹, T2 = soil applied 10&#xa0;kg ha<sup>−</sup>¹, T3 = soil applied 15&#xa0;kg ha<sup>−</sup>¹, and two drought levels (50 and 100% FC) were used.&#xa0;Drought stress reduced the root length (RL), shoot fresh (SFW) and dry weight (SDW) upto (16%, 12% and 21%), respectively, while thiourea increased these attributes upto (9%, 47% and 65%). Photosynthetic pigments significantly declined upto (Chl. <i>a</i> 10%, and Chl. <i>b</i> 17%) under drought stress, while thiourea improved chlorophyll <i>a</i> (chl.) 40%, and Chl. <i>b</i> 34% respectively. Drought stress decreased the peroxidase 31%, catalase upto 34% and biological yield upto 10%. While, application of thiourea at 15&#xa0;kg ha⁻¹ improved peroxidase (POD) 23%, catalase (CAT) 26% and biological yield upto 41%.&#xa0;In summary, thiourea application at 15&#xa0;kg ha<sup>−</sup>¹ was found to be effective in alleviating drought stress by improving morpho-physiological parameters while decreasing osmotic and water potential uptake in maize.</p>

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Thiourea Mediated Improvement of Drought Stress in Maize (Zea Mays L.): Unrevealing Morpho-Physiological, Biochemical, and Root Attributes

  • 期刊论文

  • 发表日期：

    2026年4月30日

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  • Arslan Haider,
  • Ejaz Ahmad Waraich,
  • Surriya Bibi,
  • Tahrim Ramzan,
  • Muhammad Ahmad,
  • Muhammad Faisal Maqsood

摘要

Drought is a significant abiotic stress that can reduce the growth and development of maize. The present study was conducted to evaluate the role of thiourea (TU) on maize tolerance under drought stress conditions. For this purpose, a pot and field trial was conducted at the research area, Department of Agronomy, UAF. Maize hybrid FH-1036 and the four treatments, T0 = control, T1 = Soil applied 5 kg ha−¹, T2 = soil applied 10 kg ha−¹, T3 = soil applied 15 kg ha−¹, and two drought levels (50 and 100% FC) were used. Drought stress reduced the root length (RL), shoot fresh (SFW) and dry weight (SDW) upto (16%, 12% and 21%), respectively, while thiourea increased these attributes upto (9%, 47% and 65%). Photosynthetic pigments significantly declined upto (Chl. a 10%, and Chl. b 17%) under drought stress, while thiourea improved chlorophyll a (chl.) 40%, and Chl. b 34% respectively. Drought stress decreased the peroxidase 31%, catalase upto 34% and biological yield upto 10%. While, application of thiourea at 15 kg ha⁻¹ improved peroxidase (POD) 23%, catalase (CAT) 26% and biological yield upto 41%. In summary, thiourea application at 15 kg ha−¹ was found to be effective in alleviating drought stress by improving morpho-physiological parameters while decreasing osmotic and water potential uptake in maize.