Genomic regions associated with stripe rust resistance against the Egyptian race revealed by genome-wide association study

Abstract Background Wheat stripe rust (caused by Puccinia striiformis f. sp. Tritici ), is a major disease that causes huge yield damage. New pathogen races appeared in the last few years and caused broke down resistant genotypes. In Egypt, some of genotypes began to be susceptible recent years. This situation increases need produce new with durable resistance. Besides, looking for source from available wheat all over world help enhancing breeding programs. Results study, set 103-spring different fourteen countries were evaluated their field two These included 17 Egyptian old cultivars. The reported well adapted environmental conditions. Out tested genotypes, eight four found both Genotyping was carried out using genotyping-by-sequencing 26,703 SNPs used genome-wide association study. Five SNP markers, located on chromosomes 2A 4A, significantly associated resistance Three gene models underlying these significant identified. One immune Iranian genotype, highest number alleles most detected. Conclusion high variation among race confirming possible improvement identified five markers are stable could marker-assisted selection after validation genetic backgrounds. Crossing between genotype will improve Egypt.