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1. Water is essential for numerous metabolic functions in plants and its loss can affect all aspects of plant growth and survival. 2. Acer velutinum is a fast-growing species of hardwood tree that is commonly used in afforestation and reforestation. 3. The impact of water deficit on the growth, biomass, pigment contents, relative water content, and osmolytes such as free proline, soluble protein, and soluble sugar were studied in this research. 4. The antioxidative enzymes including guaiacol peroxidase and catalase were also analyzed to identify the protective mechanisms related to drought resistance. 5. One-year-old seedlings were exposed to four drought treatments (100%, 75%, 50%, and 25% of the field capacity). 6. The drought treatments had a negative impact on A. velutinum growth, as exhibited by reduced plant height, basal diameter, and biomass. 7. Drought stress decreased relative water content and chlorophyll content while increasing electrolyte leakage, osmotic substances, and catalase and peroxidase activities. 8. The findings showed that A. velutinum seedlings have the capacity to adapt to water deficiency and can be recommended for afforestation and reforestation. 9. Antioxidant enzymes, biomass, and water deficit are important keywords related to this study. |
