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. 2016 Jul 20;6:30079. doi: 10.1038/srep30079

Figure 5. IAA concentrations in root tips (0–10 mm) of alfalfa seedlings (normal or apical bud removed) grown for 24 h on ½-strength Hoagland’s medium (pH 4.5) with treatments of no aluminium (-Al), aluminium stress (Al) (100 μM AlCl3), aluminium with additional IAA (Al+IAA) (100 μM AlCl3 + IAA) and -Al with additional IAA (-Al + IAA).

Figure 5

Data are means ± SE of three replicates. Bars with different letters indicate a significant difference at P < 0.05 (least significant difference test).