Abstract
Hordein, the storage protein of barley grain, consists of three groups of polypeptides called B, C and D hordeins. Each group is coded for by a complex locus and these have been designated Hor 2, Hor 1 and Hor 3 respectively. Previous work has shown that Hor 1 and Hor 2 are on the short arm of chromosome 5. The results of crosses designed to evaluate the linkage relationships of Hor 3 show that it is located about 9 cM from the centromere on the long arm of chromosome 5. The loci nec1 and wst5 are located 8·0 ± 1·5 and 37·4 ± 4·7 cM respectively distal to Hor 3. These results are discussed in relation to the chromosomal location of loci which code for homologous groups of storage proteins in wheat.
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