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Saeidi, Mohsen, Ardalani, Shiva, Jalali-Honarmand, Saeid, Ghobadi, Mohammad-Eghbal, Abdoli, Majid. (1396). Antioxidant enzyme responses and crop yield of wheat under drought stress and re-watering at vegetative growth period.. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 8(1), 2257-2267. doi: 10.30495/ijpp.2017.539069
Mohsen Saeidi; Shiva Ardalani; Saeid Jalali-Honarmand; Mohammad-Eghbal Ghobadi; Majid Abdoli. "Antioxidant enzyme responses and crop yield of wheat under drought stress and re-watering at vegetative growth period.". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 8, 1, 1396, 2257-2267. doi: 10.30495/ijpp.2017.539069
Saeidi, Mohsen, Ardalani, Shiva, Jalali-Honarmand, Saeid, Ghobadi, Mohammad-Eghbal, Abdoli, Majid. (1396). 'Antioxidant enzyme responses and crop yield of wheat under drought stress and re-watering at vegetative growth period.', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 8(1), pp. 2257-2267. doi: 10.30495/ijpp.2017.539069
Saeidi, Mohsen, Ardalani, Shiva, Jalali-Honarmand, Saeid, Ghobadi, Mohammad-Eghbal, Abdoli, Majid. Antioxidant enzyme responses and crop yield of wheat under drought stress and re-watering at vegetative growth period.. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1396; 8(1): 2257-2267. doi: 10.30495/ijpp.2017.539069

Antioxidant enzyme responses and crop yield of wheat under drought stress and re-watering at vegetative growth period.

Iranian Journal of Plant Physiology
مقاله 3، دوره 8، شماره 1، دی 2017، صفحه 2257-2267    اصل مقاله (717.24 K)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30495/ijpp.2017.539069
نویسندگان
Mohsen Saeidi* 1؛ Shiva Ardalani1؛ Saeid Jalali-Honarmand1؛ Mohammad-Eghbal Ghobadi1؛ Majid Abdoli2
1Department of Agronomy and Plant Breeding, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
2Young Researchers and Elite Club, Zanjan Branch, Islamic Azad University, Zanjan, Iran
چکیده
Drought induced stress is one of the most significant environmental challenges. This study was designed to evaluate the effects of drought stress on crop yield and antioxidant systems during the vegetative period of wheat. The study was carried out in a greenhouse using factorial experiment based on complete randomized block design (RCBD) in three replications in Razi University in Iran from 2011 to 2012. In the pot experiment, water stress was applied at vegetative growth stage (soil moisture 50 ± 5% of field capacity from the stemming to flowering periods) and various bread wheat genotypes (‘Pishtaz’, ‘DN-11’, ‘Sivand’, and ‘Marvdasht’) were examined as the second factor. Results showed that drought stress at vegetative growth stage considerably decreased plant height and crop yield. Under drought stress, the lowest and highest reductions in crop yield were noted seen in ‘Marvdasht’ and ‘DN-11’, respectively. The occurrence of drought stress at the vegetative growth stage in the experiment significantly reduced soluble protein content and membrane stability index. While drought stress considerably increased superoxide dismutase (SOD), it had no effect on the catalase (CAT) and peroxidase (POD). The studied parameters suggested that drought resistance of ‘Pishtaz’ and ‘Marvdasht’ might be due to the enhanced activity of antioxidant enzymes and low lipid peroxidation. Finally, antioxidant enzyme responses were found to provide a beneficial tool for depicting drought tolerance in different wheat genotypes in arid and semiarid regions.
کلیدواژه‌ها
Wheat؛ Oxidative stress؛ crop yield؛ reactive oxygen species؛ antioxidant defense system
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