Table 3 Germination percentage of the pH, salinity, and iron experiment with 15 different combined treatments for three different factors following a Box-Behnken Design (BBD). M₁: Sebkhet Cherita; M₂: Agareb coast; M₃: Kraten. Data are given as Mean (n = 4) ± SD (standard deviation). Column M₁, M₂, M₃, one-way ANOVA. Different letters within an analyzed column (M₁, M₂ and M₃ individually each one) indicate significant differences in the germination means for the 15 treatments; the further away each letter is from letter a means the higher the germination percentage in the specific treatment (Duncan test; significance of (p < 0.05))

From: Seed priming to optimize germination in Arthrocnemum Moq.