Abstract
Gibberellic acid (GA3) is the one of the plant growth regulator which helps plants tolerate salt competently and diminishes the effects of salt stress. The present investigation was done to determine the effect of GA3 on two different Nacl concentrations on seed germination and physiological limits of four fabaceae seeds: Acacia auriculiformis A.Cunn. ex Benth., Delonix regia (Bojer ex Hook.) Raf., Cassia fistula L., and Samanea saman (Jacq.) Merr. Experimentation was directed as a factorial with a completely randomised block design with three replicates. Salinity at two levels (50 mM and 100 mM NaCl) and hormone (GA3 at 150ppm versus no GA3 were the experimental conditions. Therefore, when the salt level was 50 mM NaCl, priming the seeds of these tree seeds with 150 ppm GA3 suggestively increased germination percentage, declined mean germination time, improved physiological parameters of the seeds.
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