The Effect of Amino Acid Spraying on water deficit in wheat in Varamin condition

In order to determine the effects of Amino acid spraying (Prolin, Betaein and Triptophan)for increasing the water deficit tolerance in Pishtaz genotype of Wheat (Triticum aestivum)a field experiment was conducted using a split-plot in randomized complete block design in 2007-2008 growing season in three replications. The main plot consisted of irrigation at 3 levels and subplots consisted Amino acid concentration spraying at 3 levels (0,3 and 6 per thousands). Results showed that the best yield was obtained from Full irrigation with 5341.2 Kg/ha that has no significant different effect with second treatment (No-irrigation on stem extension).These treatments have %38 increase yield in ratio to first treatment (No-irrigation on stem extension and heading)with 3301Kg/ha.The highest protein yield was obtained from second treatment (No-irrigation on stem extension and heading stages) and Full irrigation with 614.9Kg/ha, and first treatment with average 417.25 Kg/ha had lowest protein yield. The highest and lowest protein percentage achieved from the first treatment and Full irrigation with 12.64 and 11.48 percent respectively. The highest grain yield with average 5662Kg/ha was obtained from Amino acid spraying with 6 per thousands concentration, that had 42% increases yield in ratio to control treatment‎. In this study ‎the best results achieved from six irrigation (No-irrigation in stem extension) and Amino acid spraying with six per thousand concentration.