Summary
A translocation mapping procedure was used to map the Glu-1 genes, controlling high-molecular-weight (HMW) glutenin subunits on the long arms of group 1 wheat chromosomes, with respect to their centromeres. The Glu-A1 genes on chromosome arm 1AL were linked with the centromere but gave very different map distances (in cM) of 10.2 ± 3.5 and 33.9 ± 5.4 with test-cross and F2 progeny, respectively. The centromere-Glu-B1 and centromere-Glu-D1 map distances were estimated to be 28.1 ± 2.8 and 30.9 ± 2.7, respectively, using test-cross seeds. A telocentric mapping procedure gave a reduced map distance of 22 ± 3.5 for the centromere-Glu-D1 interval. Possible reasons for the differences between the mapping results obtained with test-cross and F2 seeds and with the translocation and telocentric procedures are discussed.
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Communicated by R. Riley
Portion of the Ph.D. thesis submitted by the senior author
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Singh, N.K., Shepherd, K.W. Linkage mapping of genes controlling endosperm storage proteins in wheat. Theoret. Appl. Genetics 75, 642–650 (1988). https://doi.org/10.1007/BF00289133
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DOI: https://doi.org/10.1007/BF00289133