Abstract
Abstract The effects of aluminum on biomass, nutrients and kinases were studied in two durum wheat cultivare (Triticum durum Desf. cvs Sapfo, Capeiti 82) grown in nutrient solutions (pH 4.5) at seven Al levels (0, 9.3, 18.5, 37.1, 74.1, 148, and 297 μM). The most evident Al toxicity symptom was a reduction in root growth. Sapfo showed greater Al tolerance than Capeiti 82. However, both cultivare must be characterized as Al‐sensitives. Aluminum in the nutrient solution above 74.1 μM significantly (P<0.05) reduced root growth of both durum wheat cultivare. The concentration of 74.1 μM Al can be suggested for screening of durum wheats on the basis of tolerance to Al. The concentrations of the nutrients Ca, Mg, K, and Fe in the plant tissues of both cultivare decreased even at low Al levels. The decrease of Ca+2 content in leaves and roots of the two durum wheat cultivare was almost the same while the less sensitive cultivar Sapfo retained larger amounts of Mg+2 in roots and leaves compared with the more sens...
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