Effect of Gibberllic acid GA3 on Germination Characteristies and Seeding Growth under Salt Stress Conditions in Wheat ( Triticum aestivum,L.)

Abstract

: An experiment was conducted in the laboratory of the Faculty of Natural Resources and Environmental Sciences / Tobruk University.

A practical experiment was carried out with a complete random design in 12 pots during the winter season 2019 , with two factors, the first was soaking the seeds with gibberellic acid at a concentration of 300 ppm and the other was not soaked

The plant growth experiment was designed in  distilled water only, 4000 and 9000 ppm NaCl to know the effect of gibberellic acid and its efficiency in improving the properties of germination and cold growth under the influence of salt stress vegetarian and wheat variety (Mexica B2-2)

The results showed the superiority of seeds soaked with gibberellic acid over un-soaked seeds in giving the fastest germination initiation (emergence) and the highest averages of germination percentage and strength,  soft and dry weights for cold. As for the NaCl concentrations only, it was given in distilled water only. Comparison (the fastest initiation and highest average of germination rate). An average increase of the fastest initiation of germination and a decrease in germination rate were observed, with an increase in NaCl concentrations to 9000 ppm.

The results showed a significant effect of the interactions between soaking and non-soaking treatments with gibberellic acid and sodium chloride media. In most of the studied characteristics, we conclude that the concentration of sodium chloride increased in the germination medium.