Abstract

AbstractLines of hexaploid triticale included in the 11th and 12th Eucarpia Triticale Yield Nurseries and the 18th and 19th International Triticale Yield Nurseries were karyotyped using C‐banding. A new chromosome substitution, 6D(6A), was identified in both spring and winter triticales. It is likely that the substitution first appeared in the progenies of octoploid × hexaploid triticale hybrids at CIMMYT and within a few years spread to about one‐fourth of spring materials. The 2D(2R) substitution appeared in winter triticales, probably by introgression from spring lines from CIMMYT.

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