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Identification of race-specific QTL and candidate genes for Aphanomyces root rot resistance in alfalfa (Medicago sativa L.).

G3 (Bethesda, Md.) - 6 Jul 2026

Lin Meng, Tang Xuemei, Zhao Dongyan, Medina Cesar A, Dornbusch Melinda R, Beil Craig T, Sheehan Moira J, Samac Deborah A

Abstract excerpt

Aphanomyces root rot (ARR), caused by the oomycete Aphanomyces euteiches, is one of the most devastating diseases of alfalfa in the United States. Two pathogenic races of A. euteiches have been identified, with most commercial cultivars resistant to race 1. However, there are limited commercial cultivars resistant to race 2, which is the predominant race in North America. To dissect the genetic control of...

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PMID: 42132231
DOI: 10.1093/g3journal/jkag131
PMCID: PMC13334173

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