The Effects of Salicylic Acid on The Growth and Some Physiological Properties of Bread Wheat Varieties Under Drought Stress

Abstract

This research was conducted at Department of Field Crops in Faculty of Agriculture inYüzüncü Yıl University in 2014 , in the growth chamber under controlled conditions in terms oftemperature and light, for 5 bread wheat varities (Doğu-88, Altay-2000, Bezostaja1, Alparslan and Tirmixed population line), for two different irrigation levels (using 40% of the field capacity for droughtand 60% for control), through the application of two different salicylic acid dosage (0.1 mM kg-1SA and 1.0 mM kg-1SA), with four repetitions in 80 pots with 4 kg soil capacity, with respect torandomized experimental design principles. In terms of the investigated characteristics, salicylic acidapplications were found to be effective for the Bezostaja1, Doğu-88, Altay-2000 varieties and Tirwheat population line by enhancing their tolerance to drought and exhibited differences with respect tothe salicylic acid doses (0.1 mM kg-1and1.0 mM kg-1). The characteristics, which were adverselyaffected when compared to the control application under drought conditions, were commonlypositively affected by the salicylic acid applications.