Thirty Panicum maximum Jacq. genotypes were screened for aluminum tolerance at aluminum rates 0, 12 e 24 mg L-1 in nutrient solution. The effects of the aluminum in Al-induced inhibition of root elongation and Al-tolerance index allowed classification into three different Al tolerance groups: tolerant, medium and sensitive. Most of the genotypes presented moderate even low tolerance to aluminum toxicity, although K191, T95, T84, T91, Centenário were Al-tolerant and Centauro, K68, K214, T46 were Al-sensitive genotypes.
aluminum toxicity; forage grasses; mineral stress