Influence of Low-molecular Weight Glutenin Subunits on Wheat Kernel Elasticity and Sedimentation Volume

The effect of low molecular weight (LMW) glutenin subunits (GS) in presence of high molecular weight (HMW)-GS has over SDS sedimentation volume (SDSS) and kernel elasticity is presented. Twenty-six wheat lines having differnet origins and classified by SDS-PAGE into 14 different LMW-GS genotypic all...

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Bibliographic Details
Published in:Cereal research communications 2011-06, Vol.39 (2), p.237-245
Main Authors: Figueroa, J.D.C., Peña, R.J., Rayas-Duarte, P., Khan, K.
Format: Article
Language:English
Subjects:
Agriculture
Alleles
Breads
Chemical composition
Contour lines
Elasticity
Genes
Genetic loci
Life Sciences
Moduli of elasticity
Molecular weight
Plant Breeding/Biotechnology
Plant Genetics and Genomics
Plant Physiology
Quality and Utilization
Wheat
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Summary:The effect of low molecular weight (LMW) glutenin subunits (GS) in presence of high molecular weight (HMW)-GS has over SDS sedimentation volume (SDSS) and kernel elasticity is presented. Twenty-six wheat lines having differnet origins and classified by SDS-PAGE into 14 different LMW-GS genotypic allelic groups were analyzed. When good HMW-GS background, i.e. Glu-1 1, 2*, 7 + 9 or 17 + 18 and 5 + 10 was associated with a number of allelic variants of Glu-3 loci (LMW-GS), i.e. Glu-A3 c and b; Glu-B3 g, h, d, higher kernel modulus of elasticity and SDSS were generally present. However, when poor HMW-GS background was present, i.e. Glu-1 null, 7 + 8, 2 + 12, a poor to medium modulus of elasticity and SDSS were generally found. Glu-B3 j allelic group, which possesses the wheat–rye translocation showed a tendency to have low elastic modulus, high plastic work (WP) and low SDSS. The effects of good LMW-GS are enhanced by a good HMW-GS background, yielding higher kernel elasticity and SDSS.
ISSN:0133-3720
1788-9170
DOI:10.1556/CRC.39.2011.2.7