Fig 3. The kinetics of root growth of barley seedlings cv. ‘Sebastian’ treated with different concentrations of Al.

The error bars represent the standard deviations of the mean. Tested Al doses consisted of: 5; 10; 20; 40; 60 μM AlCl₃, in full Hoagland’s medium, pH = 4 (treatments), pH = 6 (control). The total root length was analysed at selected time points of continuous Al-treatment: 0 days; 2 days; 4 days; 6 days. The measurements were carried out using WinRHIZO system.