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dc.contributor.author
Figlan, Sandiswa
dc.contributor.author
Hlongoane, Tsepiso
dc.contributor.author
Bainotti, Carlos Tomas
dc.contributor.author
Campos, Pablo
dc.contributor.author
Vanzetti, Leonardo Sebastián
dc.contributor.author
Tranquilli, Gabriela Edith
dc.contributor.author
Tsilo, Toi John
dc.date.available
2024-09-04T11:35:31Z
dc.date.issued
2024-12
dc.identifier.citation
Figlan, Sandiswa; Hlongoane, Tsepiso; Bainotti, Carlos Tomas; Campos, Pablo; Vanzetti, Leonardo Sebastián; et al.; Bread wheat cultivar Popo harbors QTLs for seedling and adult plant resistance to leaf rust in South African and Argentine environments; Elsevier; Plant Stress; 14; 12-2024; 1-10
dc.identifier.issn
2667-064X
dc.identifier.uri
http://hdl.handle.net/11336/243546
dc.description.abstract
Leaf rust, caused by the fungus Puccinia triticina Eriks (Pt), is a destructive disease affecting wheat (Triticum aestivum L.) production in many countries, and a serious threat to food security. As a result, several breeding programs have included leaf rust resistance as an important trait. The discovery and identification of new resistance genes that could aid in incorporating durable or long-lasting leaf rust resistance into wheat is fundamental in these breeding programs. The present study aimed to identify quantitative trait loci (QTLs) for leaf rust resistance in 127 recombinant inbred lines (RIL) developed from the cross between the resistant wheat cultivar Popo and the susceptible cultivar Kariega. The RIL population and parental lines were phenotyped for leaf rust infection type and severity at seedling and adult plant stage, respectively. The former in the greenhouse (in Argentina) and the latter in multiple field test environments comprising 3 locations in South Africa (in Tygerhoek in the Western Cape Province during the 2014, 2015, 2017 and 2018 cropping seasons; Clarens during 2014, 2016 and 2017 cropping seasons and in Bethlehem in the Free State Province during 2017 cropping season) and in 1 location in Argentina (during the 2017 and 2018 cropping seasons in Marcos Juárez, Córdoba Province). The population was genotyped using genotyping-by-sequencing. A total of 12,080 silicoDArT and 2,669 SNP markers were used for QTL analysis. In total, 25 putative QTLs for resistance to leaf rust at seedling and adult plant stages were identified, including 5 QTLs for seedling and 20 QTLs for adult plant resistance (APR). Interestingly, both Popo and Kariega contributed with alleles for resistance. Significant loci for reducing leaf rust infection at seedling stage were designated QLr.arc-1A, QLr.arc-2B, QLr.arc-5B, QLr.arc-6A and QLr.arc-6D. Three minor QTLs derived from Popo designated as QLr.arc-1B1, QLr.arc-2D and QLr.arc-3D were also detected from the field tests, explaining 5–10%, 10–16% and 5–7% of the phenotypic variance, respectively. The identified QTLs and their closely linked silicoDArT and SNP-based markers can be used for fine mapping and candidate gene discovery in wheat breeding programs targeting durable leaf rust resistance.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
LEAF RUST
dc.subject
QTL MAPPING
dc.subject
BREEDING
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GENOTYPING BY SEQUENCING
dc.subject.classification
Agricultura
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Bread wheat cultivar Popo harbors QTLs for seedling and adult plant resistance to leaf rust in South African and Argentine environments
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-09-02T12:05:46Z
dc.journal.volume
14
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
dc.description.fil
Fil: Figlan, Sandiswa. University of South Africa; Sudáfrica
dc.description.fil
Fil: Hlongoane, Tsepiso. No especifíca;
dc.description.fil
Fil: Bainotti, Carlos Tomas. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina
dc.description.fil
Fil: Campos, Pablo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; Argentina
dc.description.fil
Fil: Vanzetti, Leonardo Sebastián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina
dc.description.fil
Fil: Tranquilli, Gabriela Edith. Instituto Nacional de Tecnología Agropecuaria; Argentina
dc.description.fil
Fil: Tsilo, Toi John. University of South Africa; Sudáfrica
dc.journal.title
Plant Stress
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2667064X24002239
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.stress.2024.100570
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