Effects of salicylic acid and glycine under deficit irrigation on Alfalfa seed production

Alfalfa (Medicago Sativa) is known as the queen of forage plants green and gold. The most important factor limiting water shortages for agricultural products, especially in arid and semi-arid areas. The external application of extenuating stress can cause immune responses, particularly by plants. In order to investigate the application of salicylic acid and glycine on production of alfalfa hay under water deficit conditions, tests for split-plot in a randomized complete block design with three replications in research farm of Islamic Azad University of Karaj in the crop year 95-1394 was administered. 5/0 and 1 mM salicylic acid and glycine were 10 and 50 mM. Evaluations consisted of fresh forage yield, number of stems per plant, the distance between the node and leaf dry weight. The results indicate the adverse effect of drought stress on all traits under study and reduce the damaging effects of stress by TkhfyfDhndh materials. Among the different irrigation treatments, the effects of irrigation at the start of the match-rigging more negative impact on most of the traits under study and mitigation of stress treatments, Glaysyn importantly the role of the salicylic acid in reducing the adverse effects played . For example, full irrigation and foliar application of ascorbic acid and glycine at 1 and 50 mM fresh forage yield (84/58 and 46/61 respectively ha) were in the top group and irrigation at the time of flowering and the absence of extenuating sprayed with the lowest forage yield stress (48/28 ha) in the weakest group were analyzed.