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ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #317348
Title: QTL mapping of adult-plant resistance to stripe rust in wheat line P9897

Author
item ZHOU, X - Northwest Agriculture And Forestry University
item HAN, D - Northwest Agriculture And Forestry University
item Chen, Xianming
item MU, M - Northwest Agriculture And Forestry University
item XUE, W - Northwest Agriculture And Forestry University
item ZENG, Q - Northwest Agriculture And Forestry University
item WANG, Q - Northwest Agriculture And Forestry University
item HUANG, L - Northwest Agriculture And Forestry University
item KANG, Z - Northwest Agriculture And Forestry University

Submitted to: Euphytica
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/10/2015
Publication Date: 8/1/2015
Citation: Zhou, X.L., Han, D.J., Chen, X., Mu, M.J., Xue, W.B., Zeng, Q.D., Wang, Q.L., Huang, L.L., Kang, Z.S. 2015. QTL mapping of adult-plant resistance to stripe rust in wheat line P9897. Euphytica. 205(1):243–25.

Interpretive Summary: Stripe rust is a devastating fungal disease of common wheat. Wheat line P9897 showed adult-plant resistance to stripe rust for several years. To map resistance quantitative trait loci, The progeny lines from a cross of P9897 with susceptible Mingxiang 169 were tested for stripe rust response in replicated field trials in 2013. Resistance gene analog polymorphism and simple sequence repeat markers were used to identify markers linked to the resistance loci. Two loci, one on the long arm of chromosome 2B and one on the short arm of chromosome 3B, conferred resistance to stripe rust. The gene on the long arm of 2B is likely a new gene for resistance to stripe rust, and the gene on the short arm of 3B is likely the same as a gene previously identified on the same chromosome arm in a US wheat variety. These QTL with linked markers could be used in developing wheat cultivars with stripe rust resistance.

Technical Abstract: Stripe rust (or yellow rust), caused by Puccinia striiformis f. sp. tritici (Pst), is a devastating fungal disease of common wheat. Wheat line P9897 showed adult-plant resistance (APR) to stripe rust for several years. To map resistance quantitative trait loci (QTL), F2:3 lines from a cross of P9897 with susceptible Mingxiang 169 were phenotyped for stripe rust response in replicated field trials in 2013. Resistance gene analog polymorphism and simple sequence repeat markers were used to identify markers linked to the resistance QTL. Two QTL, QYr.nafu-2BL and QYr.nafu-3BS conferring APR to stripe rust, were mapped to 8.8 and 3.3 cM intervals on chromosome 2BL and 3BL, respectively. QYr.nafu-2BL is likely a new APR gene for resistance to stripe rust, and QYr.nafu-3BS is likely the same locus as previously identified QYr.uga-3BS.1. These QTL with linked markers could be used in developing wheat cultivars with stripe rust resistance.