Mapping of quantitative trait loci using a doubled-haploid population from the cross of indica and japonica cultivars of rice

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cg.contributor.affiliationPhilippine Rice Research Instituteen
cg.contributor.affiliationInternational Rice Research Instituteen
cg.contributor.affiliationYamagata Universityen
cg.identifier.doihttps://doi.org/10.2135/cropsci2008.11.0655en
cg.issn0011-183Xen
cg.issue5en
cg.journalCrop Scienceen
cg.volume49en
dc.contributor.authorLapitan, Victoria C.en
dc.contributor.authorRedoña, Edilberto D.en
dc.contributor.authorAbe, Toshinorien
dc.contributor.authorBrar, Darshan S.en
dc.date.accessioned2024-12-19T12:55:54Zen
dc.date.available2024-12-19T12:55:54Zen
dc.identifier.urihttps://hdl.handle.net/10568/166142
dc.titleMapping of quantitative trait loci using a doubled-haploid population from the cross of indica and japonica cultivars of riceen
dcterms.abstractImproving the cooking and eating quality of grain has always been an important consideration in most rice (Oryza sativaL.) breeding programs. In this study, an established rice doubled‐haploid (DH) population consisting of 219 lines from anther culture of the F1 ofindicavariety PSB Rc10 andjaponicavariety Nipponbare was used to identify the quantitative trait loci (QTL) for amylose content (AC), gel consistency (GC), and gelatinization temperature (GT). Two hundred five simple sequence repeat (SSR) markers were used to construct a genetic linkage map covering the 12 chromosomes. A total of 13 QTLs were identified—three for AC and five each for GC and GT. Eight QTLs had major effects from which seven coincided with the most important loci identified in previous reports. All QTLs for AC were shown to have major effects on GC and GT. The QTL with the largest effect, which accounted for 74% of the AC variation corresponded to the waxy (Wx) locus while the other two QTLs were located above and below this region. The significant phenotypic correlations of these traits may underlie the colocalization of their QTLs. A major QTL specifying GT was detected within the alkali degeneration (Alk) locus. Other minor QTLs were identified for GC in chromosomes 2 and 8 and for GT in chromosome 2. Utilization of a homozygous DH population with relatively large sample size might have increased the accuracy of mapping these QTLs. The results thus obtained are valuable in breeding rice varieties with better grain quality.en
dcterms.available2009-09
dcterms.bibliographicCitationLapitan, Victoria C.; Redoña, Edilberto D.; Abe, Toshinori and Brar, Darshan S. 2009. Mapping of quantitative trait loci using a doubled-haploid population from the cross of indica and japonica cultivars of rice. Crop Science, Volume 49 no. 5 p. 1620-1628en
dcterms.extentpp. 1620-1628en
dcterms.issued2009-09
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectamyloseen
dcterms.subjectchromosomesen
dcterms.subjectcultivarsen
dcterms.subjectgelationen
dcterms.subjectgenetic mappingen
dcterms.subjectgenetic markersen
dcterms.subjecthaploidsen
dcterms.subjectphenotypic correlationen
dcterms.subjectquantitative trait locien
dcterms.subjectsimple sequence repeatsen
dcterms.typeJournal Article

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