Confirmation of a 4BL/5RL Wheat‐Rye Chromosome Translocation Line in the Wheat Cultivar ‘Viking’ Showing High Copper Efficiency

Abstract

Abstract The N‐ and C‐banding patterns of the chromosomes of the hexaploid wheat cultivar ‘Viking’, and the hairy‐necked line derived from it, were described. Except for chromosome 4B (formerly 4A), no significant variation in banding patterns were found between the two genotypes. In addition to a 5BS.7BS (5BL.7BL) translocation in both genotypes, the presence of a small 5RL rye segment in a terminal position on the long arm of chromosome 4B was suggested by banding and confirmed by meiotic analysis, and by the hairy neck marker as well as by rye‐specific leaf esterase bands in the translocation line. The translocation breakpoint is presumed to be located in the distal 4BL2.2 and/or 5RL2.3 band. The hairy‐necked ‘Viking’ was shown to be copper efficient. Its utilization in wheat breeding programmes is proposed.