Figure 6.

The Na⁺ and K⁺ content in the tissues of wt (white bars) and the T₄ transgenic plants of line S04-9 (cross-hatched line bars) after 50 and 200 mm NaCl treatment. The ion contents were determined by atomic absorption spectrophotometry. A, Na⁺ content of the root; B, Na⁺ content of the shoot; C, K⁺ content of the root; D, K⁺ content of the shoot; E, K⁺ to Na⁺ ratio of the root; F, K⁺ to Na⁺ ratio of the shoot. Results as means ± se (n = 3). ^* and ^**, Significantly different from the wt at P < 0.05 and < 0.01, respectively, by Student's t test.