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 in Yuzuncu Yil University in 2014 , in the growth chamber under controlled conditions in terms of temperature and light, for 5 bread wheat varities (Dogu-88, Altay-2000, Bezostaja1, Alparslan and Tir mixed population line), for two different irrigation levels (using 40% of the field capacity for drought and 60% for control), through the application of two different salicylic acid dosage (0.1 mM kg-1 SA and 1.0 mM kg-1 SA), with four repetitions in 80 pots with 4 kg soil capacity, with respect to randomized experimental design principles. In terms of the investigated characteristics, salicylic acid applications were found to be effective for the Bezostaja1, Dogu-88, Altay-2000 varieties and Tir wheat population line by enhancing their tolerance to drought and exhibited differences with respect to the salicylic acid doses (0.1 mM kg-1 and1.0 mM kg-1). The characteristics, which were adversely affected when compared to the control application under drought conditions, were commonly positively affected by the salicylic acid applications.