Abstract: Many accessions of the wheat wild relative Sharon goatgrass (Aegilops sharonensis Eig., AES) are resistant to African races of the stem rust pathogen (i.e., Ug99 group races), which currently threaten wheat production worldwide. A procedure was designed to introgress the respective resistances to specific bread wheat genomes by producing plants homozygous for the A and B genomes and hemizygous for the D and Ssh genomes or homozygous for the A and D genomes and hemizygous for the B and Ssh genomes. In these genotypes, which lack the Ph1 allele, ...
(read more)