Abstract
Recombination values between the centromere, Amp-B1, and Lr3 were evaluated using a 'Chinese Spring' double-ditelosomic line for chromosome 6B and the euploid variety 'Sinvalocho M.A.'. Recombination was not observed between the centromere and Amp-B1, but between the centromere and Lr3 the value was 52.8 ± 3.74%. A particular progeny during two successive backcross generations showed abnormal behaviour that resulted in a reduced number of recombinants between the centromere and Lr3, probably a consequence of the karyotypic instability of 'Sinvalocho M.A.'.Key words: wheat genetic map, aminopeptidases, rust reaction, centromere marker.
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