nfluence of Gibberllic acid on seed germination of Vicia faba L under different concentrations of sodium chloride salt.

Abstract

An experiment was conducted in Cereal Technology Lab – Faculty of Agriculture – Omar, ELMokhtar University- A factorial experiment was conducted according to completely randomize design with three replications, during 2020 season with two factors in order to study the effect of soaking seeds in gibberellic acid on germination and growth of seedling broad bean under salt stress conditions .first treatment was soaked seeds in 150 ppm gibberllic acid for 24 hours Vs non soaked . second treatment was different concentration of NaCl (control ,4000,6000 and 8000 ppm).The result showed the superiority of seeds soaked in gibberellic acid in most of the attributes ( number of germination days, germination percentage, shoot length, shoot and root fresh weight, shoot and root dry weight, germination rate (GR), germination index(GI), tolerance index(TI), seedling vigor index(SVI). As for increase salt  concentrations of NaCl reducing growth and germination characteristics , As all traits decreased, the salt concentration increased to 8000 ppm. The result also showed significant interaction effect  between soaking treatment in gebberellic acid  and salt concentrations on most traits.