Relative contents of chlorophylls (A), flavonols (B), anthocyanins (C) and H
content (D) in leaf rank #16 of Control and S-restricted plants (Low S) after 21, 28 and 35 d of treatment. Data are means ± SE (n=3). Vertical bars fit within the symbol if not visible. *: Significant differences from the Control value at p ≤ 0.05.