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New strategy for improving PHS tolerance of wheat using the N260T mutation in MKK3. Allohexaploid wheat has A, B, and D sub-genomes. If we could introduce the N260T mutation into all homoeologous MKK3 genes, the triple mutant could express its phenotype of increased dormancy, providing a new avenue for developing hyper-dormant wheat cultivars. Red horizontal lines show the locations of the homoeologous MKK3 genes on each wheat chromosome.
