Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (3): 440-446 .doi: 10.3864/j.issn.0578-1752.at-2006-7399

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES • Previous Articles     Next Articles

Review on Low-molecular-weight Glutenin Subunits and Their Coding Genes

  

  1. 中国农业科学院作物科学研究所/国家小麦改良中心
  • Received:2006-04-07 Revised:2006-12-26 Online:2007-03-10 Published:2007-03-10

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Abstract: The Low-molecular-weight glutenin subunits (LMW-GS) of wheat is about 1/3 of seed storage proteins and 60% of gluten fraction, and have great effects on dough extensibility and food processing quality, thus became one of the main factors for wheat quality improvement. However, resolution of the LMW-GS and the scoring of their alleles by direct analysis of proteins are more difficult due to the larger number of expressed subunits and their overlapping mobility with the abundant gliadin proteins. In this paper, the nomenclature and structure features of LMW-GS, their coding gene loci on chromosomes and allelic variation, the registered genes in Genbank and classification, and their relations with quality were reviewed. We also discussed the identification of LMW-GS genes and their development of molecular markers based on the author’s own research results, in order to provide a theoretical basis for using LMW-GS in breeding quality wheat cultivar and marker assistant selection.

Key words: wheat, Quality

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