Studying common wheat material from crosses with Aegilops biuncialis vis. using markers for chromosome 1U

  • N. A. Kozub
  • I. A. Sozinov
  • H. Ya. Bidnyk
  • N. A. Demianova
  • O. I. Sozinova
  • A. V. Karelov
  • Ya. B. Blume
DOI: https://doi.org/10.7124/FEEO.v25.1139

Abstract

Aim. The aim of the research was to study common wheat material developed from crosses with Aegilops biuncialis Vis. using storage protein loci as markers for chromosome 1U. Methods. SDS and APAG electrophoreses of seed storage proteins were employed to identify alleles at the Glu-1 and Gli-1 loci. The following markers of chromosome 1U of Ae. biuncialis were used: the Glu-U1 locus encoding high-molecular-weight glutenin subunits located on the long arm (1UL) and the gliadin locus Gli-U1 on the short arm (1US). Results. In F6–F7, elimination of chromosome 1U material with a frequency of about 0.222 proceeded. This indicates selection against unbalanced genotypes, which could be tracked using markers for chromosome 1U. In wheat F4–F6 hybrids from crosses with Ae. biuncialis, we revealed a high frequency of formation of genotypes possessing the 1UL arm and lacking 1US. Conclusions. Since the Glu-U1 locus on the arm 1UL encodes high-molecular-weight subunits which directly determine bread-making quality, the developed wheat material is a source of a new allele of this locus introgressed from Ae. biuncialis for enriching the common wheat gene pool.

Keywords: Triticum aestivum, Aegilops biuncialis, storage proteins, introgression.

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