Development and Characterization of Wheat-<i>Thinopyrum elongatum</i> 1B-1E Translocation Lines with Fusarium Head Blight Resistance.

ABSTRACT: Fusarium head blight (FHB) is a devastating disease of wheat (Triticum aestivum) globally. Utilizing resistance genes from wild relatives like Thinopyrum elongatum offers a promising approach for genetic improvement. We introgressed FHB resistance from Th. elongatum chromosome 1E into common wheat by inducing homoeologous recombination with wheat chromosome 1B using the ph1b mutant. From a population of 376 BC₁F₂ individuals, we identified 19 independent 1E-1B recombinant lines using KASP markers and fluorescence genomic in situ hybridization (FGISH). High-resolution genotyping with a 130K SNP array precisely mapped recombination breakpoints, revealing a hotspot in the distal long arm. Further phenotypic evaluation revealed that 11 recombin

SUBMITTER: Wang C 

PROVIDER: S-EPMC12736424 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature