The effect of super absorbent polymer application on some physiological and biochemical characteristics of wheat (Triticum aestivum. L.) under cut irrigation

In order to study the effects of amount of super absorbent polymer on some physiological and biochemical characteristics of wheat under normal and cut irrigation an experiment was conducted in research field of Islamic Azad University, Varamin Branch during 2012 growing season. The experimental design was laid out in a randomized complete block with a split plots arrangement of treatments in three replications. Main plots included four different levels of irrigation (complete irrigation or no irrigation withholding,cut irrigation at stem elongation, cut irrigation at flowering, and cut irrigation at both flowering and seed setting stages ) and sub factors were included super absorbent (0, 20 and 40 kg per hectare). The results showed that cut irrigation conditions in different growth stages significantly decreased seed yield, carbohydrate grain content, total chlorophyll content and gibberellin but increased protein percentage, superoxide dismutase activity and malondialdehyde content. Super absorbent polymer application in cut irrigation in different growth stages had positive effect on seed yield. In general, we concluded that super absorbent can improve growth conditions for wheat plants grown under water deficit stress. The reviews although show super absorbent is able to reduce the destroying effect of low water by absorbing and preserving water and approve varying agricultural characters. With attention to increased yield and its components and decreasing plant water need, using this material is economically acceptable.