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Abstract
In Argentina, the yield potential of rice (Oryza sativa L.) under suboptimal temperatures of temperate regions and during early sowing in tropical regions depends on its low-temperature germinability (LTG) and subsequent cold tolerance at the seedling stage (CTS). This study focused on the phenotyping and identification of contrasting henotypes for LTG and CTS of 18 rice genotypes genotyped with 49 markers previously linked to cold tolerance. The selected [ver mas...]
dc.contributor.authorBonell, Martha Lucrecia
dc.contributor.authorArguissain, Gustavo Gabriel
dc.contributor.authorCrepy, Maria Andrea
dc.contributor.authorFernandez, Paula Del Carmen
dc.contributor.authorHeinz, Ruth Amelia
dc.date.accessioned2020-07-28T17:15:57Z
dc.date.available2020-07-28T17:15:57Z
dc.date.issued2020-07
dc.identifier.issn0014-2336
dc.identifier.issn1573-5060
dc.identifier.otherhttps://doi.org/10.1007/s10681-020-02661-3
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7629
dc.identifier.urihttps://link.springer.com/article/10.1007/s10681-020-02661-3
dc.description.abstractIn Argentina, the yield potential of rice (Oryza sativa L.) under suboptimal temperatures of temperate regions and during early sowing in tropical regions depends on its low-temperature germinability (LTG) and subsequent cold tolerance at the seedling stage (CTS). This study focused on the phenotyping and identification of contrasting henotypes for LTG and CTS of 18 rice genotypes genotyped with 49 markers previously linked to cold tolerance. The selected markers revealed phenotypic variability among the genotypes evaluated. The results also demonstrated that both traits are regulated by different genes and that CTS is associated with differential alleles of candidate gene (CG)-based markers. Biplot clustering analysis allowed the selection of two cultivars, H298a/90 and Puitá INTA CL, contrasting for LTG, CTS and CG alleles. An F2 population (n = 128) derived from these two cultivars was genotyped with 43 SSR- and CG-based markers and 89 F2:3 families (~ 1800 seedlings) phenotyped for CTS. Single-marker analysis detected two major QTL that had been previously reported for CTS: qCTS11, which explained 18.35% of the phenotypic variance at 7 days of treatment, and qCTS12, which explained 26.62% and 47.94% of the phenotypic variance at 7 and 14 days of treatment, respectively. Marker-assisted introgression of QTL alleles favorable for CTS into Puitá INTA CL, which has high LTG, could contribute to obtaining breeding lines with early seedling vigor adapted to the sowing season in Argentina.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceEuphytica 216 : article number: 128 (2020)es_AR
dc.subjectArrozes_AR
dc.subjectRiceeng
dc.subjectTolerancia al Fríoes_AR
dc.subjectCold Toleranceeng
dc.subjectFenotiposes_AR
dc.subjectPhenotypeseng
dc.subjectLoci de Rasgos Cuantitativoses_AR
dc.subjectQuantitative Trait Locieng
dc.subjectArgentinaes_AR
dc.subject.otherQTL (quantitative trait loci)eng
dc.subject.otherGenes Candidatoses_AR
dc.titlePhenotyping and QTL mapping for cold tolerance at the germination and seedling stages in Argentine temperate ricees_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Concepción del Uruguayes_AR
dc.description.filFil: Bonell, Martha Lucrecia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentinaes_AR
dc.description.filFil: Arguissain, Gustavo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentinaes_AR
dc.description.filFil: Crepy, Maria Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concepción del Uruguay; Argentinaes_AR
dc.description.filFil: Fernandez, Paula Del Carmen. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Heinz, Ruth Amelia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.subtypecientifico


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