Figure 1.

Soluble Pi in the two rice cultivars ‘Nip’ and ‘Kas’. Seedlings were grown in P-deficient (A, B) or P-sufficient (C, D) solution containing different nitrogen forms (NH₄⁺ or NO₃⁻) for 1 week and the root (A, C)- and shoot (B, D)-soluble Pi contents were measured. Data are means ± sd (n = 4). Columns with different letters are significantly different at P < 0.05.