Description:
The donor of the Wapo-A1b allele (= Haplotype 2) was the Triticum aestivum L. subsp. aestivum spring wheat
line UC1110 developed by the University of California Davis (GSTR 13501). UC1110 was crossed with the
tetraploid variety Kronos, and then backcrossed three more times to Kronos. Homozygous BC3F3 lines were
selected and are the deposited material. In each generation the presence of the Wapo-A1b allele was confirmed
using diagnostic molecular markers for the mutation encoding the characteristic C47F amino acid change.