Submitted to: Plant and Soil
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 22, 2005
Publication Date: July 1, 2006
Citation: Ma, H., Bai, G., Lu, W.Z. 2006. Quantitative trait loci for Aluminum resistance in wheat cultivar Chinese Spring. Plant and Soil Journal 283:239-249 Interpretive Summary: Aluminum (Al) toxicity is one of the major limiting factors for wheat production in acid soils. The objective of this study was to locate wheat genes for Al-tolerance on wheat chromosomes and identify molecular markers linked to the genes for marker-assisted breeding. Chinese Spring is a moderately tolerant wheat cultivar. A set of lines of Chinese Spring with one chromosome arm removed in each line was assessed for Al tolerance. Lines Dt5AL, Dt7AL, Dt2DS and Dt4DS were significantly more sensitive to Al stress than that of original Chinese Spring, suggesting that the Al-tolerance genes might be on the missing chromosome arms 5AS, 7AS, 2DL and 4DL. Three genes - Qalt.ksu-4D, Qalt.ksu-5A and Qalt.ksu-2D - enhanced root growth under Al stress. The gene on 4DL of Chinese Spring is most likely the same gene identified in Atlas 66, but a different allele. Some DNA markers identified in this study would be useful for marker-assisted pyramiding of different genes for Al tolerance in wheat cultivars.