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QTL characterization of resistance to leaf rust and stripe rust in the spring wheat line Francolin#1

文献类型： 外文期刊

作者： Lan, Caixia 1 ; Rosewarne, Garry M. 1 ; Singh, Ravi P. 1 ; Herrera-Foessel, Sybil A. 1 ; Huerta-Espino, Julio 3 ; B 1 ;

作者机构： 1.Int Maize & Wheat Improvement Ctr CIMMYT, Mexico City 06600, DF, Mexico

2.Sichuan Acad Agr Sci, Crop Res Inst, Key Lab Biol & Genet Breeding Wheat Southwest, Chengdu 610066, Sichuan, Peoples R China

3.INIFAP, Campo Expt Valle Mexico, Chapingo 56230, Edo Mexico, Mexico

4.Hebei Acad Agr & Forestry Sci, Hebei Lab Crop Genet & Breeding, Inst Cereal & Oil Crops, Shijiazhuang 050031, Peoples R China

期刊名称：MOLECULAR BREEDING （ 影响因子：2.589； 五年影响因子：2.75 ）

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收录情况： SCI

摘要： Growing resistant wheat varieties is a key method of controlling two important wheat diseases, leaf rust and stripe rust. We analyzed quantitative trait loci (QTL) to investigate adult plant resistance (APR) to these rusts, using 141 F-5 RILs derived from the cross 'Avocet-YrA/Francolin#1'. Phenotyping of leaf rust resistance was conducted during two seasons at Ciudad Obregon, Mexico, whereas stripe rust was evaluated for two seasons in Toluca, Mexico, and one season in Chengdu, China. The genetic map was constructed with 581 markers, including diversity arrays technology and simple sequence repeat. Significant loci for reducing leaf rust severity were designated QLr.cim-1BL, QLr.cim-3BS.1, QLr.cim-3DC, and QLr.cim-7DS. The six QTL that reduced stripe rust severity were designated QYr.cim-1BL, QYr.cim-2BS, QYr.cim-2DS, QYr.cim-3BS.2, QYr.cim-5AL, and QYr.cim-6AL. All loci were conferred by Francolin#1, with the exception of QYr.cim-2DS, QYr.cim-5AL, and QYr.cim-6AL, which were derived from Avocet-YrA. Closely linked markers indicated that the 1BL locus was the pleiotropic APR gene Lr46/Yr29. QYr.cim-2BS was a seedling resistance gene designated as YrF that conferred intermediate seedling reactions and moderate resistance at the adult plant stage in both Mexican and Chinese environments. Significant additive interactions were detected between the six QTL for stripe rust, but not between the four QTL for leaf rust. Furthermore, we detected two new APR loci for leaf rust in common wheat: QLr.cim-3BS.1 and QLr.cim-7DS

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