Effect of Gibberellic acid application on Seed Germination of Lettuce under salt stress conditions

Abstract

This experiment was carried out in the Faculty of Agriculture ,Damascus University, during the period (2019 – 2020), to study the effct of Gibberellic acid on seeds germination of lettuce plant (cv. Kabous and Shinshar) under salt stress conditions.

Seeds of studied species were soaked in gibberellic acid (0,50,100ppm) for 24h, then cultured in a mixture of tourp and perlite (1:1), Sodium chlorid was applied at (0,50,100,150ppm).

The gradual  increase in salt concentrations resulted in a decrease of all studied parameters. On the other hand, Gibberellic acid application resulted in increase of  germination percentage and rat, shoots and roots length, leaf number and area under salt stress treatments.

Application of gibberellic acid resulted in improving all germination characters under salt stress conditions.