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ARS Home » Midwest Area » Wooster, Ohio » Corn, Soybean and Wheat Quality Research » Research » Publications at this Location » Publication #395049

Research Project: Enhancement of Eastern U.S. Wheat Quality, Genetics and Marketability

Location: Corn, Soybean and Wheat Quality Research

Title: Description of U6719-004 wheat germplasm with YrAS2388R stripe rust resistance introgression from Aegilops tauschii

item LOPEZ, SELENA - Michigan State University
item WIERSMA, ANDREW - Michigan State University
item STRAUSS, NIKAYLA - Washington State University
item WATKINS, TARA - Michigan State University
item Baik, Byung-Kee
item ZHANG, GUORONG - Kansas State University
item SEHGAL, SUNISH - South Dakota State University
item KOLB, FREDERIC - University Of Illinois
item POLAND, JESSE - King Abdullah University Of Science And Technology
item MASON, R - Colorado State University
item CARTER, AARON - Washington State University
item OLSON, ERIC - Michigan State University

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/1/2022
Publication Date: 10/27/2023
Citation: Lopez, S.R., Wiersma, A.T., Strauss, N.M., Watkins, T., Baik, B.V., Zhang, G., Sehgal, S.K., Kolb, F.L., Poland, J.A., Mason, R.E., Carter, A.H., Olson, E.L. 2023. Description of U6719-004 wheat germplasm with YrAS2388R stripe rust resistance introgression from Aegilops tauschii. Journal of Plant Registrations. 17(1):26-33.

Interpretive Summary: Stripe rust is one of the most problematic wheat diseases and is responsible for significant yield reduction globally. With recent increases in disease severity in the U.S. and lack of resistance, eastern U.S. soft wheat varieties are especially venerable to stripe rust; therefore, wheat breeders are anxiously searching for genetic resistance to the disease. A stripe rust resistant wheat germplasm (U6719-004) was developed by introducing the novel disease resistance gene (YrAS2388R), which originated from the diploid D genome ancestor species, to the hard white winter wheat line (KS05HW14) through direct hybridization and backcrossing. It was confirmed that the new stripe rust resistant germplasm carries the resistance gene and it showed no differences in grain quality and yield potential from the parent, KS05HW14. The stripe rust resistant germplasm is expected to be a valuable resource for the development of stripe rust resistant wheat varieties.

Technical Abstract: In recent years, stripe rust (caused by Puccinia striiformis f. sp. tritici Westend.) has become an increasingly problematic disease affecting wheat (Triticum aestivum L.). While stripe rust resistance genes Yr28 and YrAS2388R have been successfully transferred from Aegilops tauschii Coss. to hexaploid wheat, these genes have not been widely utilized for stripe rust resistance breeding largely due to a lack of publicly available and well-adapted germplasm. Here we describe U6719-004 (KS05HW14/3/KS05HW14 /TA1718//KS05HW14) (Entry 538 of DNAM population, Reg. No. MP-14, NSL 536301 MAP), a hexaploid wheat germplasm carrying YrAS2388R transferred from Ae. tauschii accession TA1718 using a combination of direct hybridization with the hard white winter wheat line KS05HW14 followed by two rounds of backcrossing and three generations of single-seed-descent. U6719-004 stripe rust resistance was characterized under controlled and natural conditions. Using gene-based markers, TA1718 and U6719-004 were confirmed to be YrAS2388R carriers. Grain yield for U6719-004 was evaluated in eleven year-by-location environments across the United States. Grain quality parameters were measured in four year-by-location environments. The availability of U6719-004 will enable the use of YrAS2388R for stripe rust resistance breeding efforts.