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Wheat Performance Evaluation at Drought Environment

Zhaleh Firouzi and Adel Siosemardeh
Department of Agronomy, School of Agriculture, University of Kurdistan, Sanandaj, Iran
Abstract—In this research, we studied the performance of a wide variety of wheat ecotypes in arid and semiarid environments region of Iran. To evaluate the performance of the wheat we studied variables including changes in dry weight of stem, leaves, spike and dry matter remobilization from these organs as well as grain yield and harvest index. We evaluated the responses of sink and source to several treatment methodologies. The performance of the photosynthesis transport mechanism before and after treatments for two core categories in wheat genotypes were studied. To further evaluate performance we analyzed the water-soluble and alcohol-soluble carbohydrate volume in the stem with two methodologies. The results showed significant relationships between increasing severity of drought stress and a decrease in grain yield for various genotypes and an increase in sink limitation. Moreover, dry matter remobilization also decreased to a greater extent. Additionally, the results show that in an arid environment drought stress causes the transportation mechanism to malfunction. Outcomes show that under drought stress grain yield will be more confined and therefore the soluble carbohydrate will reside and accumulate in the stem and transpiration to spikes will be slowed down dramatically.
 
Index Terms—crop, abiotic, drought stress, drought tolerance, carbohydrate, sustainability

Cite: Zhaleh Firouzi and Adel Siosemardeh, "Wheat Performance Evaluation at Drought Environment," Journal of Advanced Agricultural Technologies, Vol. 4, No. 2, pp. 145-150, June 2017. Doi: 10.18178/joaat.4.2.145-150
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