Abstract
Callus cultures of tomato cultivars “Marglobe” and “VFNT Cherry” were subjected to 200 and 400 μM aluminum added to the culture medium. The growth of the “Marglobe” callus was completely inhibited after two passages on aluminum-containing medium, while the “VFNT Cherry” callus was only partly inhibited. The 200 and 400 μM aluminum treatments did not differ significantly in toxicity with either cultivar. Both cultivars took up similar amounts of aluminum, apparently reaching an equilibrium with the culture medium. These experiments demonstrate that aluminum toxicity in tomato is not exclusively a whole-plant phenomenon, and that genotypic differences in aluminum tolerance may be expressed in cell cultures.
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