Volume 17, Issue 1 (Journal of Soil and Plant Interactions 2026)
2026, 17(1): 37-49 |
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Department of Agronomy, Male.C., Islamic Azad University, Malekan, Iran , farajzadeh@iau.ac.ir
Abstract: (322 Views)
Background and Objective: Drought is the primary factor that hinders crop growth. Management practices, such as the use of novel plant compounds, can effectively enhance the sustainability of crop growth and yield under water stressful conditions. This study aimed to investigate the effect of different irrigation levels and the application of Hb-101 compound (extracted from pine tree) on the growth characteristics and yield of quinoa (Chenopodium quinoa) under water stress conditions.
Methods: The study was conducted for two years at the research farm of Islamic Azad University, Malekan Branch, using a split-plot experiment with a randomized complete blocks design. Treatments included concentrations of Hb-101 and different irrigation regimes. Treatments consisted of Hb-101 (0, 3, 6 and 9 per 1000) and irrigation regimes (irrigation after 70, 100, 130 and 160 mm evaporation from pan).
Results: Reducing the amount of irrigation water had a negative effect on plant height, leaf area, chlorophyll index, and grain yield. A significant decrease in these characteristics was observed, particularly in the irrigation after 160 mm evaporation from pan treatment. On the other hand, the application of Hb-101 significantly increased the plant height and leaf area. Additionally, the Hb-101 reduced abscisic acid level in plant leaves, which appears to be a key factor in the lowered stomatal resistance under the water stress. Application of this compound also improved the antioxidant properties of the leaves, which can be effective in enhancing the plant's resistance to environmental stresses.
Conclusion: The application of Hb-101 compound could enhance physiological characteristics, growth and yield of quinoa, irrespective of irrigation level. Therefore, the use of this compound, especially under limited water conditions, can be recommended as an effective method for enhancing quinoa production in areas with water resource shortages.
Methods: The study was conducted for two years at the research farm of Islamic Azad University, Malekan Branch, using a split-plot experiment with a randomized complete blocks design. Treatments included concentrations of Hb-101 and different irrigation regimes. Treatments consisted of Hb-101 (0, 3, 6 and 9 per 1000) and irrigation regimes (irrigation after 70, 100, 130 and 160 mm evaporation from pan).
Results: Reducing the amount of irrigation water had a negative effect on plant height, leaf area, chlorophyll index, and grain yield. A significant decrease in these characteristics was observed, particularly in the irrigation after 160 mm evaporation from pan treatment. On the other hand, the application of Hb-101 significantly increased the plant height and leaf area. Additionally, the Hb-101 reduced abscisic acid level in plant leaves, which appears to be a key factor in the lowered stomatal resistance under the water stress. Application of this compound also improved the antioxidant properties of the leaves, which can be effective in enhancing the plant's resistance to environmental stresses.
Conclusion: The application of Hb-101 compound could enhance physiological characteristics, growth and yield of quinoa, irrespective of irrigation level. Therefore, the use of this compound, especially under limited water conditions, can be recommended as an effective method for enhancing quinoa production in areas with water resource shortages.
Type of Study: Research |
Subject:
Plant water relations
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
