Fig. 4

Germination percentage of heteromorphic seeds of Colobanthus quitensis treated with different concentrations of sodium chloride (50–200 mM). Light and dark brown seeds from (a) Arctowski (pA), (b) La Marisma (pPA), (c) Laredo (pL) and (d) Conguillío populations (pC). Bars represent mean ± SD (n = 5). Different letters indicate statistically significant differences (p < 0.05) according to factorial analysis (2 × 5), followed by a Tukey HSD test.