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Wheat is the most widely cultivated crop in the world. It grown on more than 220 million ha and its production reached approximately 787 million tones according to FAO estimation. Thus, the increase of its production is crucial to achieve food security for an ever-growing global population. Drought is the most limiting factor for wheat growth and development. It compromises drastically its yield and production worldwide, and causes severe important agricultural losses especially in arid and semiarid areas. In this study we aimed to determine the effects water stress on four varieties of durum wheat (Triticum durum Desf.): Carioca, Karim, Tarik and Tomouh. Three levels of water stress were used: 100% of field capacity (FC) (SH0), 33.33% of FC (SH1) and 16.66% of FC (SH2). The results showed that water deficit leads to a reduction in leaves and roots growth, in plant height, number of leaves and tillers, and length of the last leaf. We also noted a decrease in total fresh and dry biomass, K+ content, while an increase in foliar soluble sugars content, Na+ and Cl− concentrations was recorded. Statistical analysis suggests that water content, root soluble sugars content and number of tillers can be used to evaluate the response of durum wheat to water stress. Globally, the results showed that the varieties Tarik and Tomouh are more drought-tolerants than Carioca and Karim.

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Agro-Physiological and Biochemical Responses of Wheat Durum Varieties to Water Deficit Stress

  • 会议论文

  • 发表日期：

    2025年

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  • Moussa Ouhaddach,
  • Tomader Errabii,
  • Houda ElYacoubi,
  • Fatima Gaboun,
  • Atmane Rochdi

摘要

Wheat is the most widely cultivated crop in the world. It grown on more than 220 million ha and its production reached approximately 787 million tones according to FAO estimation. Thus, the increase of its production is crucial to achieve food security for an ever-growing global population. Drought is the most limiting factor for wheat growth and development. It compromises drastically its yield and production worldwide, and causes severe important agricultural losses especially in arid and semiarid areas. In this study we aimed to determine the effects water stress on four varieties of durum wheat (Triticum durum Desf.): Carioca, Karim, Tarik and Tomouh. Three levels of water stress were used: 100% of field capacity (FC) (SH0), 33.33% of FC (SH1) and 16.66% of FC (SH2). The results showed that water deficit leads to a reduction in leaves and roots growth, in plant height, number of leaves and tillers, and length of the last leaf. We also noted a decrease in total fresh and dry biomass, K+ content, while an increase in foliar soluble sugars content, Na+ and Cl− concentrations was recorded. Statistical analysis suggests that water content, root soluble sugars content and number of tillers can be used to evaluate the response of durum wheat to water stress. Globally, the results showed that the varieties Tarik and Tomouh are more drought-tolerants than Carioca and Karim.