Identification of Novel Variants of High Molecular Weight Glutenin Subunits in Indian Bread Wheat Landraces

Abstract

The High Molecular Weight Glutenin Subunits (HMW GS) in bread wheat landraces were studied using the SDS-PAGE technique. Out of the 32 landraces, 23 were homogeneous while nine showed heterogeneity with respect to the HMW glutenin subunits. Novel variants were observed in HMW GS in four of the landraces. One novel subunit coded by the Glu-B1x locus and two novel subunit pairs at the Glu-D1 locus were identified. A modified system of nomenclature over that of Payne and Lawrence (1983) is suggested for numbering the new subunits. Accordingly, the novel subunits are numbered as 71 (Glu-B1x) and 2+122; 51+122; 52+123 and 53+123(Glu-D1x + y) and the allelic designations are given as Glu-B1 bh for 71+9; Glu-D1bp for 2+122. Glu-D1bq for 51+12; Glu-D1br for 51+122; GluD1br for 52+123 and GluD1bt for 53+123.

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Correspondence to A. M. Singh.

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Singh, A.M., Deveshwar, J.J., Ahlawat, A.K. et al. Identification of Novel Variants of High Molecular Weight Glutenin Subunits in Indian Bread Wheat Landraces. CEREAL RESEARCH COMMUNICATIONS 35, 99–108 (2007). https://doi.org/10.1556/CRC.35.2007.1.12

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Keywords

  • High Molecular Weight Glutenin Subunits
  • wheat
  • novel subunits
  • Glu-1