Abstract
The behavior of 17 gamma irradiation mutant lines derived from the aluminum sensitive wheat cultivar `Anahuac' was compared with two sensitive and three tolerant cultivars in nutritent solutions containing seven Al3+ concentrations (0; 0.5; 1; 2; 4; 6 and10 mg/liter), at a temperature of 25 °C and 4.0 pH. Tolerance was measured by the continued growth of the primary roots in a solution without aluminum after 48 hours in a solution containing a known concentration of aluminum. 14 mutant lines were as tolerant to the presence of 10 mg/liter of Al3+ in the treatment solutions as were the tolerant `BH-1146', `IAC-60' and `IAC-24' cultivars. Two mutant lines were tolerant and one was sensitive to the presence of 1 mg/liter of Al3+, while the cultivars `Siete Cerros' and `Anahuac' were sensitive to 1 and 0.5 mg/liter Al3+ in the solutions, respectively. F2 seedlings, obtained from cross among one sensitive and twelve tolerant mutant lines to the sensitive cultivars (`Siete Cerros' or `Anahuac') and the tolerant cultivars (`BH-1146' or `IAC-24') were assessed for tolerance to 2 mg/liter Al3+ in nutritient solutions. The twelve tolerant mutant lines and the tolerant `IAC-60' and `IAC-24' cultivars differed from the sensitive `Siete Cerros' or `Anahuac' cultivars by one pair of dominant alleles. The results indicated that tolerance in the induced mutants was due to a single pair of dominant alleles and that these alleles expressed the same tolerance as `BH-1146' and `IAC-24' cultivars.
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de Oliveira Camargo, C.E., Tulmann Neto, A., Ferreira Filho, A.W. et al. Genetic control of aluminum tolerance in mutant lines of the wheat cultivar Anahuac. Euphytica 114, 47–53 (2000). https://doi.org/10.1023/A:1003993320432
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DOI: https://doi.org/10.1023/A:1003993320432