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Rate of 22Na+ accumulation in Nax2 near-isogenic lines grown in 25 mm NaCl in root (A) and shoot (B); [+]Nax2 (▵); [−]Nax2 (▴). Values are means ± se (n = 4). Linear regressions for 22Na+ uptake by the shoot are [+]Nax2: y = 3.07 × 10−3x + 0.02 (r2 = 0.99); [−]Nax2: y = 6.07 × 10−3x + 0.25 (r2 = 0.88).
