Characterizing the Saltol quantitative trait locus for salinity tolerance in rice

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dc.creatorThomson, Michael J.
dc.creatorde Ocampo, Marjorie
dc.creatorEgdane, James
dc.creatorRahman, M. Akhlasur
dc.creatorSajise, Andres Godwin
dc.creatorAdorada, Dante L.
dc.creatorTumimbang-Raiz, Ellen
dc.creatorBlumwald, Eduardo
dc.creatorSeraj, Zeba I.
dc.creatorSingh, Rakesh K.
dc.creatorGregorio, Glenn B.
dc.creatorIsmail, Abdelbagi M.
dc.date2010-09
dc.date2024-12-19T12:55:45Z
dc.date2024-12-19T12:55:45Z
dc.date.accessioned2026-06-27T04:10:33Z
dc.descriptionThis study characterized Pokkali-derived quantitative trait loci (QTLs) for seedling stage salinity tolerance in preparation for use in marker-assisted breeding. An analysis of 100 SSR markers on 140 IR29/Pokkali recombinant inbred lines (RILs) confirmed the location of the Saltol QTL on chromosome 1 and identified additional QTLs associated with tolerance. Analysis of a series of backcross lines and near-isogenic lines (NILs) developed to better characterize the effect of the Saltol locus revealed that Saltol mainly acted to control shoot Na+/K+ homeostasis. Multiple QTLs were required to acquire a high level of tolerance. Unexpectedly, multiple Pokkali alleles at Saltol were detected within the RIL population and between backcross lines, and representative lines were compared with seven Pokkali accessions to better characterize this allelic variation. Thus, while the Saltol locus presents a complex scenario, it provides an opportunity for marker-assisted backcrossing to improve salt tolerance of popular varieties followed by targeting multiple loci through QTL pyramiding for areas with higher salt stress.
dc.identifierhttps://hdl.handle.net/10568/166006
dc.identifier.urihttp://hdl.handle.net/123456789/24019
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceThomson, Michael J.; de Ocampo, Marjorie; Egdane, James; Rahman, M. Akhlasur; Sajise, Andres Godwin; Adorada, Dante L.; Tumimbang-Raiz, Ellen; Blumwald, Eduardo; Seraj, Zeba I.; Singh, Rakesh K.; Gregorio, Glenn B. and Ismail, Abdelbagi M. 2010. Characterizing the Saltol quantitative trait locus for salinity tolerance in rice. Rice, Volume 3 no. 2-3 p. 148-160
dc.subjectalleles
dc.subjectchromosomes
dc.subjectgenetic variation
dc.subjecthomeostasis
dc.subjectinbred lines
dc.subjectnear-isogenic lines
dc.subjectquantitative trait loci
dc.subjectsalinity
dc.subjectsalt tolerance
dc.subjectsimple sequence repeats
dc.titleCharacterizing the Saltol quantitative trait locus for salinity tolerance in rice
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)