The effect of aluminium on mitotic activity and level of free cytokinins in barley (Hordeum vulgare) roots
1994
Brazdicova, B. | Vizarova, G. | Zatkalikova, T. (Slovenska Akademia Vied, Bratislava (Slovakia). Ustav Ekobiologie)
Miotic activity in root apical meristem was negatively influenced by aluminium sulphate at low concentration (0.025 micromol.l** (-1)) and acid pH. The low concentration of aluminium sulphate in nutrition medium at pH 4.5 decreased the level of free endogenous cytokinins in young barley plants (Hordeum vulgare) as compared with the effect of pH 4.5 and 5.5. Different concentrations of Al(OH)3 (3, 6, and 12 mmol, respectively) and pH (5.5 - control, 4.5 and 6.7) inhibited the mitotic activity mainly at pH 6.7. The level of free cytokinins was also decreased. The mitotic activity in root apical meristem correlated with the level of free endogenous cytokinins.
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