Inheritance of B subunits of glutenin and ω-and γ-gliadins in tetraploid wheats.

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'.

• Authors: C Y Liu, K W Shepherd
• Journal: TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik (Theor Appl Genet) Vol. 90 Issue 7-8 Pg. 1149-57 (Jun 1995) ISSN: 0040-5752 [Print] Germany
• PMID: 24173077 (Publication Type: Journal Article)