The Role of Gibberellic Acid in Alleviating the Adverse Effect of Saline Irrigation Water on Growth and Yield Components of Barley Plant.

Abstract

A pot experiment was carried out at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate, during the growth season of 2005/2006 to investigate the effectiveness of Gibberellin (GA3) in improving the salt irrigation water tolerance of barley (Hordeum vulgare L.) and its effect on barley plant growth and yield components.GA3 significantly improve in shoot weight of barley plant by 30-39 %, shoot fresh weight by 23-34 %, shoot dry weight by 22-31 % and leaf area by 7-26 % compared to unsprayed treatment. Also, spike length increased by 31 %, 100-grain weights by 8-16 %, number of grains per spike by 22-35 % and weight of grains per spike by 22 % compared to unsprayed treatment.