Genetics of stripe rust resistance in a common wheat landrace Aus27492 and its transfer to modern wheat cultivars

The development of resistant cultivars is a preferred way to manage the wheat rust pathogens. Successful breeding relies on continuous discovery, characterization and deployment genetically diverse resistance sources. This investigation covers identification stripe (caused by Puccinia striiformis f. sp. tritici) carried pre-Green Revolution genotype, Aus27492, from France its transfer modern backgrounds. Genetic analysis using an F3 population derived cross Aus27492 with susceptible parent ‘Avocet S’ indicated digenic inheritance all stage resistance. underlying genes were tentatively named YrAW6 YrAW7 these loci located in long arms chromosomes 2B 5A, respectively, through Illumina iSelect 90 K Infinium SNP genotyping array-based bulked segregant (BSA). While was shown be same as previously described gene Yr34 based pathotypic specificity, appears represent new locus. To take results laboratory farmers’ fields, derivatives Australian ‘Emu Rock’, ‘Mace’ ‘Suntop’ delivered wheat-breeding companies for use donor