Mapping quantitative trait loci of Meloidogyne graminicola resistance and tolerance in a recombinant inbred line population of Oryza glaberrima × O. sativa

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dc.creatorLawilao, Judith Galeng
dc.creatorSwamy, B.P. Mallikarjuna
dc.creatorKumar, Arvind
dc.creatorCabasan, Ma. Teodora Nadong
dc.creatorDe Waele, Dirk
dc.date2019
dc.date2024-12-19T12:54:15Z
dc.date2024-12-19T12:54:15Z
dc.date.accessioned2026-06-27T04:13:58Z
dc.descriptionHost response of BC2F3 recombinant inbred line (RIL) population derived from a cross between African rice (CG14) and Asian rice (IR64) genotypes was evaluated in the field and quantitative trait loci (QTLs) that confer resistance and tolerance to Meloidogyne graminicola were mapped using SSR markers. Of the 155 BC2F3 progenies evaluated, 23 were resistant and six were partially resistant based on the number of second-stage juveniles (J2) per root system and J2 per g roots. Based on yield reduction, 23 progenies were identified as tolerant and 14 were less sensitive to M. graminicola infection. QTLs related to resistance were detected on chromosomes 6, 7 and 12. QTL for tolerance linked to percentage yield reduction was mapped on chromosome 5. QTLs linked to fresh root weight, dry root weight, dry shoot weight, percentage filled grains per panicle and yields were also mapped. QTLs identified will be useful in a breeding programme to develop M. graminicola-resistant and tolerant rice cultivars.
dc.identifierhttps://hdl.handle.net/10568/164753
dc.identifier.urihttp://hdl.handle.net/123456789/25953
dc.languageen
dc.publisherBrill
dc.sourceLawilao, J.G., Swamy, B.P.M., Kumar, A., Cabasan, Ma. T.N. and De Waele, D. 2019. Mapping quantitative trait loci of Meloidogyne graminicola resistance and tolerance in a recombinant inbred line population of Oryza glaberrima × O. sativa. Nematol., Volume 21 no. 4 p. 401-417
dc.subjectagronomy and crop science ecology
dc.subjectevolution
dc.subjectbehavior and systematics
dc.titleMapping quantitative trait loci of Meloidogyne graminicola resistance and tolerance in a recombinant inbred line population of Oryza glaberrima × O. sativa
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)