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Molecular markers for tracking variation in lipoxygenase activity in wheat breeding

Molecular markers for tracking variation in lipoxygenase activity in wheat breeding,10.1007/s11032-010-9466-5,Molecular Breeding,Hongwei GengYan,Yan Z

Molecular markers for tracking variation in lipoxygenase activity in wheat breeding   (Citations: 1)
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Lipoxygenase (LOX) activity is an important factor determining the color of flour and end-use products of wheat. In the present study, quantitative trait loci (QTL) for LOX activity in common wheat were mapped using 71 doubled haploid (DH) lines derived from a Zhongyou 9507 × CA9632 cross, and SSR markers. Two QTL, QLpx.caas.1AL and QLpx.caas-4B, were identified on chromosomes 1AL and 4B, closely associated with LOX activity. The SSR loci Xwmc312 and Xgwm251 proved to be diagnostic and explained 13.4–25.2% of the phenotypic variance for the 1AL locus and 14.3–27.0% for the 4B locus across four environments. The SSR markers Xgwm251 and Xwmc312 were validated across 198 Chinese wheat cultivars and advanced lines and showed highly significant (P Xwmc312/Xgwm251 to test these wheat cultivars and advanced lines. The results suggested that the marker combination Xwmc312/Xgwm251 is efficient and reliable for evaluating LOX activity and can be used in marker-assisted selection (MAS) for targeting flour color attributes to noodle and other wheat-based products.
Journal: Molecular Breeding - MOL BREEDING , vol. 28, no. 1, pp. 117-126, 2011
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    • ...This finding is also supported by results obtained in common wheat (Triticum aestivum Desf.), which assigned the Lpx-1 genes to the group 4 chromosomes [24,25] and, very recently, highlighted the existence of a major QTL for LOX activity on chromosome 4B [26,27], thus confirming a significant effect of this locus on the enzyme activity in wheat seeds...

    Angelo Verlottaet al. Insight into durum wheat Lpx-B1: a small gene family coding for the li...

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