Relationship of HMW, LMW Glutenin Subunits and γ-gliadins with Gluten Strength in Indian Durum Wheats
2004
Oak, M. D. | Tamhankar, S. A. | Rao, V. S. | Bhosale, S. B.
Twenty-four durum wheat genotypes were evaluated for two years to assess the relationship between HMWglutenin subunits, LMWB glutenin patterns, gammagliadins and gluten strength as measured by SDS-sedimentation volume. Indian durum genotypes assessed in this study represented a diverse set of Glu-1, GH-B1 and Glu-3 alleles. Considerable variability was detected for protein content and gluten strength. All the locals and released varieties derived from locals showed significantly higher protein content. Specific alleles at Glu-1, Glu-3 and Gli-B1 loci showed different effects on gluten strength. HMW glutenin subunits 2* and 14+15 showed association with high gluten strength. Genotypes having LMW-f (linked γ-43.5) showed significantly higher gluten strength than other three LMW-B patterns, i.e. LMW-b and c (linked γ-45) and LMW-e(linked γ-44). While genotypes with γ-44 and linked LMW-e patterns were found to have lowest gluten strength. The Gli-A2 locus did not show any significant association with gluten strength.
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