Analyzing wheat cultivars grown in Czech Republic for eight stem rust resistance genes

Stem rust is a disease of wheat caused by basidiomycete Puccinia graminis f. sp. tritici (Pgt). Emergence new populations the pathogen and their spread over world calls for growing cultivars with lasting resistance. Knowledge resistance gene composition in local fields together knowledge global movements races crucial. Present study focused on using molecular markers to detect eight genes 58 encompassing more than 85% wheat-growing area Czech Republic. Presence within was compared severity 2014–2020 field trials. Local samples Pgt were collected tested virulence profiles differential lines two accessions then lines. Gene Sr38 present most frequently (63.79%) while this showed lower infection non-race specific trials, pathotypes from 2020 season mostly virulent it. Sr31 Sr24 are 10.34% 13.79% frequencies. The fact that none suggests Ug99 lineage currently not This grown Republic rely heavily single being overcome. Two other genes, still effective, occur sporadically.