Abstract            Volume:12  Issue-4  Year-2024         Original Research Articles

Online ISSN : 2347 - 3215 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcret@gmail.com

Ethiopia, the origin and diversity center of Arabica coffee is facing low national average yield due to production constraints, including drought. Drought and unfavorable temperatures significantly impact coffee production, causing water deficit or stress in plants. Environmental factors like water deficit, temperature extremes, salinity, toxic metals, and UV radiation also impact plant growth and productivity. The aim of this paper is to review the response of coffee under drought stress conditions. Plants exhibit diverse drought tolerance capacity due to their unique genetic constitution, influenced by various morphological, physiological, and biochemical mechanisms. Drought-tolerant plants decrease shoot growth, leaf area, while increasing leaf thickness, deep root and root-shoot ratio. They self-balance drought by regulating turgor and reducing water loss by using stomatal closure, utilizing adaptations like osmotic adjustment. Drought conditions in plants produce essential metabolites like sugars, amino acids, polyols, amides, and secondary metabolites, with drought-tolerant coffee genotypes having elevated biochemical composition. Plants accumulate compatible solutes and quaternary ammonium compounds. In general, drought is significantly impacts on coffee productivity. Therefore, to address this issue, research should be focused on developing drought tolerant coffee varieties.

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