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Genome-wide association study uncovers the genetic basis of stem rust resistance in the southern US oat (Avena sativa L.) germplasm at different growth stages.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik - 28 Feb 2026

Acharya Janam Prabhat, Babar Md Ali, Khan Naeem, Klos Kathy Esvelt, Furlan Flavia, Harrison Stephen, DeWitt Noah, Ibrahim Amir, Liu Shuyu, Melson Ellen, Hathcoat Daniel, Nandety Raja Sekhar, Fiedler Jason, Jin Yue, Firpo Pablo Olivera

Abstract excerpt

KEY MESSAGE: In the 440-line Southern Oat Association Panel (SOAP), GWAS detected 17 QTL, with ten in the adult stage, five in the seedling stage, and two expressed at both stages. The chromosome 1A region that aligns with Pg13 was the dominant signal. Effects combined additively, and stacking five stable adult plant loci nearly halved the disease severity Six QTL correspond to known regions, and eleven are newly...

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Identifiers

PMID: 41762226
DOI: 10.1007/s00122-026-05180-2
PMCID: PMC12950007

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