Combined linkage and association mapping reveal QTL for host plant resistance to common rust (Puccinia sorghi) in tropical maize

dc.creatorHongjian Zheng
dc.creatorChen, J.
dc.creatorChunhua Mu
dc.creatorMakumbi, D.
dc.creatorYunbi Xu
dc.creatorMahuku, G.
dc.date2018-12-17T17:44:13Z
dc.date2018-12-17T17:44:13Z
dc.date2018
dc.date.accessioned2023-07-17T20:03:08Z
dc.date.available2023-07-17T20:03:08Z
dc.identifier1471-2229
dc.identifierhttps://hdl.handle.net/10883/19686
dc.identifier10.1186/s12870-018-1520-1
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7511569
dc.descriptionBackground: Common rust, caused by Puccinia sorghi, is an important foliar disease of maize that has been associated with up to 50% grain yield loss. Development of resistant maize germplasm is the ideal strategy to combat P. sorghi. Results: Association mapping performed using a mixed linear model (MLM), integrating population structure and family relatedness identified 25 QTL (P<3.12×10-5) that were associated with resistance to common rust and distributed on chromosomes 1, 3, 5, 6, 8, and 10. We identified three QTLs associated with all three disease parameters (final disease rating, mean disease rating, and area under disease progress curve) located on chromosomes 1, 3, and 8. A total of 5 QTLs for resistance to common rust were identified in the RIL population. Nine candidate genes located on chromosomes 1, 5, 6, 8, and 10 for resistance to common rust associated loci were identified through detailed annotation. Conclusions: Using a diverse set of inbred lines genotyped with high density markers and evaluated for common rust resistance in multiple environments, it was possible to identify QTL significantly associated with resistance to common rust and several candidate genes. The results point to the need for fine mapping common rust resistance by targeting regions identified in common between this study and others using diverse germplasm.
dc.formatPDF
dc.languageEnglish
dc.publisherBMC (part of Springer Nature)
dc.publisherBioMed Central
dc.rightsCIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the sutable license for that purpose.
dc.rightsOpen Access
dc.source18
dc.sourceBMC Plant Biology
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectGenome-Wide Association Study
dc.subjectMaize Diseases
dc.subjectPUCCINIA SORGHI
dc.subjectGENOMES
dc.subjectMAIZE
dc.subjectPLANT DISEASES
dc.subjectSINGLE NUCLEOTIDE POLYMORPHISM
dc.subjectQUANTITATIVE TRAIT LOCI
dc.titleCombined linkage and association mapping reveal QTL for host plant resistance to common rust (Puccinia sorghi) in tropical maize
dc.typeArticle
dc.coverageUnited Kingdom


Este ítem pertenece a la siguiente institución