Abstract
Seedlings originating from F2 hybrid populations, from 26 crosses between tolerant and sensitive wheat cultivars to aluminum toxicity and from 18 crosses between tolerant cultivars were evaluated for tolerance to 3 mg/liter of Al3+, using nutrient solutions. Crosses and backcrosses were also made between the semi-dwarf cultivars IAC-24 (tolerant) and Anahuac 75 (sensitive) and seedlings in different generations were evaluated in nutrient solutions containing 2 mg/liter of Al3+. The evaluations of the seedlings from the tolerant and sensitive crosses showed that the tolerance to Al3+ toxicity was dominant and in crosses the tolerant cultivars differed from the sensitive by one pair of alleles for the tolerance. Differences were not observed between the tolerant cultivars in relation to the pair of alleles for the tolerance. Considering that selection for tolerance to Al toxicity in early generations after crossing is effective and that there is no strong undesirable genetic correlation with tolerance, outstanding inbred lines that presented tolerance to Al in nutrient solutions and in acid soils were obtained by the pedigree selection, the backcross method and the mutation breeding using gamma irradiation. No genetic obstacles to transfering Al tolerance were found.
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© 2001 Springer Science+Business Media Dordrecht
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De O.Camargo, C.E., Filho, A.W.P.F. (2001). Breeding Bread Wheat for Tolerance to Aluminum Toxicity. In: Bedö, Z., Láng, L. (eds) Wheat in a Global Environment. Developments in Plant Breeding, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3674-9_88
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DOI: https://doi.org/10.1007/978-94-017-3674-9_88
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