Fig. 8.

Comparison of the effect of an anion channel blocker (A-9-C) on the growth rate of maize coleoptile segments incubated in the presence of 10 mm KCl or 10 mm KNO₃ and 10 μm IAA, added to the medium at 2 h. Inset on the right shows total elongation growth, calculated as the sum of extensions measured at 3-min intervals for 10 h. Inset on the left presents medium pH changes measured simultaneously with growth. All curves represent means of at least seven independent experiments. Bars indicate ± s.e. The LSD test for growth is included in Supplementary Data Fig. S2.