| To clarify the allelic variation of Xinjiang wheat cultivars in Glu A3 and Glu B3 loci, and to provide theoretical basis for wheat quality breeding, the allelic variations in Glu A3 and Glu B3 alleles were tested among a total of 185 Xinjiang winter and spring cultivars using 17 STS markers. Our results showed: Xinjiang wheat varieties gave priority to with Glu A3c, Glu B3a and Glu B3j, and the distribution frequency was 64.86%, 22.70% and 17.84%, respectively. Xinjiang winter and spring cultivars in Glu A3 alleles were mainly Glu A3c, with the distribution frequency was 63.30% and 67.11%; meanwhile, in Glu B3 alleles which were mainly Glu B3j and Glu B3a, with the distribution frequency was 22.02% and 26.32%, respectively. Subunits types among landrace cultivars were less than that in Xinjiang wheat cultivars, only 5 types (mainlyA3c andB3i) were observed in winter wheat, and 10 types were obserbed in spring wheat (mainlyA3c andB3d). Subunits types were rich in introduced and bred cultivars, introduced winter wheat cultivars were mainlyA3c andB3i, and the distribution frequency was 12.84% and 6.42%, respectively; introduced spring wheat cultivars were mainlyA3c andB3j, with the distribution frequency was 17.11% and 6.58%, respectively; bred winter wheat cultivars were mainlyA3c andB3j, with the distribution frequency was 45.87% and 18.35%, respectively; bred spring wheat cultivars were mainly A3c and B3a, and the distribution frequency was 36.84% and 18.42%, respectively. The distribution frequency of inferior subunits were Glu A3a, Glu A3e, and Glu B3j in Xinjiang wheat cultivars was 5.41%, 7.03% and 17.84%, and for high quality subunits Glu A3d and Glu B3d is 10.27% and 10.81%, respectively; Which are lower than these of inferior subunits. In addition, 17 STS markers were found with good repeatability and stability, and could be quickly and effectively used as support tools in Xinjiang wheat quality improvement. |
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