Study of The Effect of Salt Stress and Kinetin and Their Interaction on The Growth and Yield of Wheat (Triticum Aestivum L.)

Abstract

A field experiment was conducted at the first station of the College of Agriculture/University of Al-Muthanna for the agricultural season 2020-2021, with the aim of studying the effect of treatment with salinity stress and kinetin on the growth and yield of the wheat (Triticum aestivum L.) cultivar of Bohooth 22. The experiment was applied by split plates design using a randomized complete block design (R.C.B.D) with three Replicators of 36 experimental units The main units included levels of irrigation water salinity (2.5, 5, 7.5, 10) ds/m, while the secondary units included levels of kinetin (0, 30, 60 Ppm). The results of the statistical analysis showed a significant difference in the salinity of the high irrigation water in most growth traits such as plant height, flag leaf area, number of tillers plant−1, spike length (cm) and number of days to physiological maturity (day) at a rate of (.5473, 14.912, 3.222, 9.176, 143.67) respectively, and the traits of the yield and its components represented by the number of spikes. m2, number of grains per spike, weight of 1000 grains (gm), grain yield (ton ha−1) and biological yield (ton ha−1) at a rate of (300.06, 35.39, 31.60, 3.52, 9.46) respectively, while soaking the seeds with kinetin led to a significant increase in most of the studied traits. Thus, we conclude that salt stress has a negative role on the growth stages of the vegetative plant, and this leads to the reduction of the yield and its components.