The effect of cut of irrigation at the end of the growing season on grain yield and some physiological characteristics of bread wheat cultivars

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Teimouri N.; SAEIDI M.; GHOBADI M.E.; SASANI SH.

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Journal: CROP PHYSIOLOGY Year:2020 | Volume:12 | Issue:2 (46) Page(s): 111-129

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Title

The effect of cut of irrigation at the end of the growing season on grain yield and some physiological characteristics of bread wheat cultivars

Author(s)

Teimouri N. | SAEIDI M. | GHOBADI M.E. | SASANI SH. | Issue Writer Certificate

Keywords

AntioxidanQ1

Osmotic adjustmentQ2

Pigments and CatalaseQ1

Abstract

Due to the great importance of drought stress and its effect on physiological and biochemical traits and reducing wheat grain yield in arid and semi-arid areas (such as most areas of Iran), this research was conducted to evaluate the effect of cut of irrigation on yield and some physiological traits of different growth type of wheat. To this end, a split plot experiment based on randomized complete block design with three replications was used in Kermanshah province in the 2012-2013 crop year. Moisture regimes were applied in the main plots at two levels include: control (irrigation treatments at all stages of growth based on water requirements of wheat) and cut of irrigation (stop watering based on Amber thermic curve). Different wheat cultivars (including: Alvand, Sivand, Zarin, Baz, Bahar, Shahryar, Norestar, Pishgam, Pishtaz, Kavir, Orume and Parsi) were used in sub-plots. Based on the results, in control treatment, Norestar had the lowest grain yield (1270 kg/ha), but other cultivars with an average of 4600 kg per hectare did not have significant difference in this regard. Cut of irrigation significantly reduced grain yield (40% in average) and Kavir and Shahriar 2100 and 2210 kg ha-1 had the highest reduction in grain yield. Cut of irrigation significantly reduced no of grain/spick, 1000 grain weight, soluble proteins, relative water content, and significantly increased activity of Antioxidan enzymes such as: peroxidase, catalase and superoxide dismutase and osmotic potential of cells (greater than of 150%). No significant reduction in the content of photosynthetic pigments and leaf area under Cut of irrigation treatment at the end of the growing season can be associated with increasing in Antioxidant activity and osmotic regulation of the studied cultivars.

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APA: Copy

Teimouri, N., SAEIDI, M., GHOBADI, M.E., & SASANI, SH.. (2020). The effect of cut of irrigation at the end of the growing season on grain yield and some physiological characteristics of bread wheat cultivars. CROP PHYSIOLOGY, 12(2 (46) ), 111-129. SID. https://sid.ir/paper/396792/en

Vancouver: Copy

Teimouri N., SAEIDI M., GHOBADI M.E., SASANI SH.. The effect of cut of irrigation at the end of the growing season on grain yield and some physiological characteristics of bread wheat cultivars. CROP PHYSIOLOGY[Internet]. 2020;12(2 (46) ):111-129. Available from: https://sid.ir/paper/396792/en

IEEE: Copy

N. Teimouri, M. SAEIDI, M.E. GHOBADI, and SH. SASANI, “The effect of cut of irrigation at the end of the growing season on grain yield and some physiological characteristics of bread wheat cultivars,” CROP PHYSIOLOGY, vol. 12, no. 2 (46) , pp. 111–129, 2020, [Online]. Available: https://sid.ir/paper/396792/en

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