The effect of gibberellic acid the changes in seed reserve utilization and germination of triticale (Triticale sp) seeds under salinity stress

The use of seed priming methods has been introduced today as one of the factors to increase the germination and establishment of seedlings and plant under adverse environmental conditions, especially salinity. Therefore, in this study, the effect of seed priming with gibberellic on germination and consumption of triticale seed storage materials under salt stress conditions was investigated. The experimental treatments in this study were 5 levels of salinity stress (zero, 40, 80, 120 and 160 mM) and 4 levels of seed priming (zero, 25 and 50 ppm gibberellic acid and control seed without prime) with 3 replications. The results showed that the highest percentage of germination (95.33%), germination index (41.65 seeds per day), seedling length (19.27 cm) and the percentage of normal seedling (95.33%) was related to seed priming with gibberellic acid 50 ppm. Also, the highest seed vigor index (1836) was related to seed pretreatment with 50 ppm gibberellic acid. In all the applied salinity levels, the highest weight of mobilized seed reserve was obtained from seed priming with 50 ppm gibberellic acid. The highest seed reserve utilization efficiency from control seeds at 160 mM potential and the highest seedling dry weight and seed reserve depletion percentage in nonstressed conditions were obtained from seed priming with 25 and 50 ppm gibberellic acid. Seed germination improves triticale germination components under salinity stress conditions and increases the plant's tolerance to salinity against salinity stress in the germination stage.