Microsatellite markers for genes Lr34/Yr18 and other quantitative trait loci for leaf rust and stripe rust resistance in bread wheat

dc.creatorSuenaga, K.
dc.creatorSingh, R.P.
dc.creatorHuerta-Espino, J.
dc.creatorWilliam, H.M.
dc.date2013-06-07T21:11:33Z
dc.date2013-06-07T21:11:33Z
dc.date2003
dc.date.accessioned2023-07-17T19:56:42Z
dc.date.available2023-07-17T19:56:42Z
dc.identifier0031-949X
dc.identifier1943-7684
dc.identifierhttp://hdl.handle.net/10883/2348
dc.identifier10.1094/PHYTO.2003.93.7.881
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7508850
dc.descriptionLeaf rust and stripe rust, caused by Puccinia triticina and P. striiformis, respectively, are important diseases of wheat in many countries. In this study we sought to identify molecular markers for adult plant resistance genes that could aid in incorporating such durable resistance into wheat. We used a doubled haploid population from a Japanese cv. Fukuho-komugi × Israeli wheat Oligoculm cross that had segregated for resistance to leaf rust and stripe rust in field trials. Joint and/or single-year analyses by composite interval mapping identified two quantitative trait loci (QTL) that reduced leaf rust severity and up to 11 and 7 QTLs that might have influenced stripe rust severity and infection type, respectively. Four common QTLs reduced stripe rust severity and infection type. Except for a QTL on chromosome 7DS, no common QTL for leaf rust and stripe rust was detected. QTL-7DS derived from ‘Fukuho-komugi’ had the largest effect on both leaf rust and stripe rust severities, possibly due to linked resistance genes Lr34/Yr18. The microsatellite locus Xgwm295.1, located almost at the peak of the likelihood ratio contours for both leaf and stripe rust severity, was closest to Lr34/Yr18. QTLs located on 1BL for leaf rust severity and 3BS for stripe rust infection type were derived from ‘Oligoculm’ and considered to be due to genes Lr46 and Yr30, respectively. Most of the remaining QTLs for stripe rust severity or infection type had smaller effects. Our results indicate there is significant diversity for genes that have minor effects on stripe rust resistance, and that successful detection of these QTLs by molecular markers should be helpful both for characterizing wheat genotypes effectively and combining such resistance genes.
dc.description881-890
dc.formatPDF
dc.languageEnglish
dc.publisherAmerican Phytopathological Society (APS)
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 suitable license for that purpose.
dc.rightsOpen Access
dc.source7
dc.source93
dc.sourcePhytopathology
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectWHEAT
dc.subjectRUSTS
dc.subjectDISEASE RESISTANCE
dc.subjectGENES
dc.subjectGENETIC MARKERS
dc.subjectMICROSATELLITES
dc.subjectQUANTITATIVE TRAIT LOCI
dc.titleMicrosatellite markers for genes Lr34/Yr18 and other quantitative trait loci for leaf rust and stripe rust resistance in bread wheat
dc.typeArticle


Este ítem pertenece a la siguiente institución