Abstract
Chromosome 1D homozygous recombinant substitution lines derived from Triticum aestivum 'Chinese Spring' (cross 1) or 'Chinese Spring' double-ditelosomic 1D (cross 2) hybridized with a disomic substitution line of Triticum tauschii chromosome 1D in 'Chinese Spring' were used to investigate the linkage relationships among Glu-D1, encoding subunits of high molecular weight glutenin storage proteins; Gli-D1, encoding gliadin storage proteins; Sr33, conferring stem rust resistance; and the centromere. Based on analysis of 88 and 91 recombinant substitution lines of crosses 1 and 2, respectively, Sr33 is tightly linked to Gli-D1 on chromosome arm 1DS (5.6 and 7.6% recombination) and less tightly to the centromere (29.6%, cross 2) and to Glu-D1 (40.9 and 39.5%). The order of the loci is Glu-D1 – centromere – Sr33 – Gli-D1.Key words: stem rust resistance, seed storage protein, glutenin, gliadin, Triticum aestivum, Triticum tauschii.
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