Abstract
A comprehensive survey was carried out on 38 South African wheat cultivars to determine their high molecular weight glutenin subunits (HMW—GS) as separated by polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulphate. The results of this study showed that the HMW-GS compositions were of generally good quality with an average score of 8·6 in the quality rating system of Payne and co-workers. The frequency of appearance of the alleles was markedly different to that noted in many other countries, most notably in the increased frequency of appearance of the chromosome 1B alleles 13 + 16 and 17 + 18. An extensive database has been established upon which an investigation into the relationship between the HMW—GS and quality characteristics can be founded.
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