Abstract
A double-1RS wheat-rye translocation line lacking all B subunits of glutenin was produced in durum wheat cv ‘Langdon’ for use in backcrosses and testcrosses in the study of the inheritance of low-molecular-weight (LMW) glutenin subunits in tetraploid wheats. The B subunits of glutenin and γ-and ω-gliadin bands present in parents derived from Triticum durum and T. dicoccoides, encoded by Glu-3 and Gli-1 loci, respectively, were found to be inherited mainly as units (blocks), as reported previously. Two rare recombination events between the Glu-A3 and Gli-A1 loci were detected in testcross progeny from ‘Edmore’ x T. dicoccoides landrace 19–27. Several rare recombinants were also detected within the 1BS-controlled B subunits of glutenin blocks, suggesting that there are two separate tightly linked loci (3.07±1.35 cM) within the Glu-B3 ‘locus’. Evidence was also obtained for the presence of an additional locus coding for a B subunit of glutenin in ‘Edmore’ that is loosely linked (20.9±3.18%) with the main Glu-B3 ‘locus’.
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Communicated by F. Salamini
Portion of this paper was presented at the 8th Int Wheat Genet Symp in Beijing, China, August 1993
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Liu, CY., Shepherd, K.W. Inheritance of B subunits of glutenin and ω-and γ-gliadins in tetraploid wheats. Theoret. Appl. Genetics 90, 1149–1157 (1995). https://doi.org/10.1007/BF00222936
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DOI: https://doi.org/10.1007/BF00222936