Mapping novel yellow and leaf rust loci and predicting resistance in cross derived Canadian durum wheat.

ABSTRACT: Durum wheat (Triticum turgidum ssp. durum) suffers substantial yield losses from yellow rust (Puccinia striiformis) and leaf rust (Puccinia triticina). In this study, we employed genome-wide association studies (GWAS) to identify loci associated with rust resistance and used genomic selection (GS) to evaluate the predictive accuracy of different statistical models and phenotyping metrics (AUDPC_GDD, Angle, GDD50, and maxVar) in a Canadian durum wheat panel. The panel was evaluated in Mexico for yellow rust across three seasons near Toluca, and for leaf rust over two seasons at El Batán. Our GWAS identified 36 significant marker-trait associations (MTAs), including known loci (Yr30, Yr57, Yr82, YrU1, Lr16, Lr17, Lr18, and Lr65) and previously unreported regions. Yellow rust resistance was l

SUBMITTER: Menor de Gaspar J 

PROVIDER: S-EPMC12505209 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature