Unveiling leaf rust resistance introgressed from non-progenitor wild species Aegilops kotschyi into hexaploid wheat.

ABSTRACT: Leaf rust (LR) is one the most widely distributed and serious pathogen hampering the wheat production globally. To combat the continuous evolution of pathogens and breakdown of resistance, matching resistance genes must be discovered at the same pace from the diverse sources. In this study, we identified the US genome species Aegilops kotschyi acc pau 396, which is resistant to the Indian Puccinia triticina pathotypes 109R31-1 (77 - 5), 21R55 (104-2), and 121R60-1 (77 - 9). An LR resistance introgression line, IL^kots was developed from this accession of Aegilops kotschyi in the background of Triticum aestivum cultivar PBW343. To examine the genetics of transferred resistance, a mapping population of 222 F_3:4 plants was generated by crossing IL^kots with the

SUBMITTER: Bai BK 

PROVIDER: S-EPMC12714724 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature