Fig. 1

Distribution of third leaf Na⁺ and third leaf K⁺ concentration and the K⁺/Na⁺ ratio in F₂ progeny of two crosses of durum wheat - Jandaroi × AUS-14740 (112 plants) and Jandaroi × AUS-14752 (176 plants). Bars represent number of plants for: (a) Third leaf Na⁺ concentration, (b) Third leaf K⁺ concentration and (c) K⁺/Na⁺ ratio. Black arrows indicate means for paternal parents, AUS-14740 and AUS-14752 (n = 10), and clear arrows indicate means for maternal parent, cv. Jandaroi (n = 10). Salt stress (100 mM NaCl) was gradually applied at the time of third leaf emergence. Na⁺ and K⁺ concentrations were measured in the fully expanded third leaf, 10 d after beginning of NaCl application