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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
Fecha : |
14/11/2015 |
Actualizado : |
05/12/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MORA, F.; CASTILLO, D.; LADO, B.; MATUS, I.; POLAND, J.; BELZILE, F.; VON ZITZEWITZ, J.; DEL POZO, A. |
Afiliación : |
BETTINA LADO LINDNER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Genome-wide association mapping of agronomic traits and carbon isotope discrimination in a worldwide germplasm collection of spring wheat using SNP markers. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
Molecular Breeding, 2015, v,35, no.2, 12 p. |
ISSN : |
1380-3743 |
DOI : |
10.1007/s11032-015-0264-y |
Idioma : |
Inglés |
Contenido : |
ABSTRACT.
Association mapping has been proposed to identify polymorphisms involved in phenotypic variations and may prove useful in identifying interesting alleles for breeding purposes. Using this approach, a total of 382 cultivars and advanced lines of spring wheat obtained from three breeding programs (Chile, Uruguay and CIMMYT) were evaluated for plant height (PH), kernels per spike (KS), 1,000 kernel weight (TKW), grain yield and carbon isotope discrimination (Δ13C) and tested for genotyping-by-sequencing-derived SNP markers across the hexaploid wheat genome. A Bayesian clustering approach via Markov chain Monte Carlo was performed to examine the genetic differentiation (FST) among different genetic groups. The results indicated the existence of two distinct and strongly differentiated genetic groups. Cluster I contained 215 genotypes (56.3 %), over 60 % (137/215) of which were collected from CIMMYT. Cluster II showed the highest FST value, according to 95 % credible interval. Linkage disequilibrium (LD) among SNPs was calculated for the A, B and D genomes and at the whole-genome level. LD decayed over a longer genetic distance for the D genome than for the A and B genomes. In the A and B genomes, LD declined to 50 % of its initial value at about 2 cM. In the D genome, LD was much more extensive, declining to 50 % of its initial value only at 22 cM. In the whole genome, LD declined to 50 % of its initial value at an average of 4 cM. Important genomic regions associated with complex traits in spring wheat were identified. Selection on these regions may increase the efficiency of the current breeding programs. Although most of the associations were environment specific, some stable associations were detected for Δ13C, KS, PH and TKW. Chromosomes 1A, 3A, 4A and 5A were the most important chromosomes, as they comprised quantitative trait loci (QTL) for Δ13C, a trait that can be used as an indirect tool for increased water-use efficiency in wheat. Environment-specific genomic regions were detected, indicating the presence of QTL-by-environment interaction. To produce suitable genotypes under contrasting water availability conditions, QTL × E interactions (and genotype-by-environment interaction) should be considered in the current spring wheat breeding program.
© 2015, Springer Science+Business Media Dordrecht. MenosABSTRACT.
Association mapping has been proposed to identify polymorphisms involved in phenotypic variations and may prove useful in identifying interesting alleles for breeding purposes. Using this approach, a total of 382 cultivars and advanced lines of spring wheat obtained from three breeding programs (Chile, Uruguay and CIMMYT) were evaluated for plant height (PH), kernels per spike (KS), 1,000 kernel weight (TKW), grain yield and carbon isotope discrimination (Δ13C) and tested for genotyping-by-sequencing-derived SNP markers across the hexaploid wheat genome. A Bayesian clustering approach via Markov chain Monte Carlo was performed to examine the genetic differentiation (FST) among different genetic groups. The results indicated the existence of two distinct and strongly differentiated genetic groups. Cluster I contained 215 genotypes (56.3 %), over 60 % (137/215) of which were collected from CIMMYT. Cluster II showed the highest FST value, according to 95 % credible interval. Linkage disequilibrium (LD) among SNPs was calculated for the A, B and D genomes and at the whole-genome level. LD decayed over a longer genetic distance for the D genome than for the A and B genomes. In the A and B genomes, LD declined to 50 % of its initial value at about 2 cM. In the D genome, LD was much more extensive, declining to 50 % of its initial value only at 22 cM. In the whole genome, LD declined to 50 % of its initial value at an average of 4 cM. Important genomic regions assoc... Presentar Todo |
Palabras claves : |
CARTOGRAFÍA GENÉTICA; ESTRÉS HÍDRICO; ESTRUCTURA GENÉTICA; LOCUS DE UN CARÁCTER CUANTITATIVO; MAPEO ASOCIATIVO; MAPEO DE QTLs; MAPEO POR ASOCIACIÓN; QTL; QUANTITATIVE TRAIT LOCI DETECTION. |
Thesagro : |
FITOMEJORAMIENTO; SEQUIA; TRIGO; TRITICUM AESTIVUM. |
Asunto categoría : |
-- F30 Genética vegetal y fitomejoramiento |
Marc : |
LEADER 03527naa a2200385 a 4500 001 1053879 005 2018-12-05 008 2015 bl uuuu u00u1 u #d 022 $a1380-3743 024 7 $a10.1007/s11032-015-0264-y$2DOI 100 1 $aMORA, F. 245 $aGenome-wide association mapping of agronomic traits and carbon isotope discrimination in a worldwide germplasm collection of spring wheat using SNP markers.$h[electronic resource] 260 $c2015 520 $aABSTRACT. Association mapping has been proposed to identify polymorphisms involved in phenotypic variations and may prove useful in identifying interesting alleles for breeding purposes. Using this approach, a total of 382 cultivars and advanced lines of spring wheat obtained from three breeding programs (Chile, Uruguay and CIMMYT) were evaluated for plant height (PH), kernels per spike (KS), 1,000 kernel weight (TKW), grain yield and carbon isotope discrimination (Δ13C) and tested for genotyping-by-sequencing-derived SNP markers across the hexaploid wheat genome. A Bayesian clustering approach via Markov chain Monte Carlo was performed to examine the genetic differentiation (FST) among different genetic groups. The results indicated the existence of two distinct and strongly differentiated genetic groups. Cluster I contained 215 genotypes (56.3 %), over 60 % (137/215) of which were collected from CIMMYT. Cluster II showed the highest FST value, according to 95 % credible interval. Linkage disequilibrium (LD) among SNPs was calculated for the A, B and D genomes and at the whole-genome level. LD decayed over a longer genetic distance for the D genome than for the A and B genomes. In the A and B genomes, LD declined to 50 % of its initial value at about 2 cM. In the D genome, LD was much more extensive, declining to 50 % of its initial value only at 22 cM. In the whole genome, LD declined to 50 % of its initial value at an average of 4 cM. Important genomic regions associated with complex traits in spring wheat were identified. Selection on these regions may increase the efficiency of the current breeding programs. Although most of the associations were environment specific, some stable associations were detected for Δ13C, KS, PH and TKW. Chromosomes 1A, 3A, 4A and 5A were the most important chromosomes, as they comprised quantitative trait loci (QTL) for Δ13C, a trait that can be used as an indirect tool for increased water-use efficiency in wheat. Environment-specific genomic regions were detected, indicating the presence of QTL-by-environment interaction. To produce suitable genotypes under contrasting water availability conditions, QTL × E interactions (and genotype-by-environment interaction) should be considered in the current spring wheat breeding program. © 2015, Springer Science+Business Media Dordrecht. 650 $aFITOMEJORAMIENTO 650 $aSEQUIA 650 $aTRIGO 650 $aTRITICUM AESTIVUM 653 $aCARTOGRAFÍA GENÉTICA 653 $aESTRÉS HÍDRICO 653 $aESTRUCTURA GENÉTICA 653 $aLOCUS DE UN CARÁCTER CUANTITATIVO 653 $aMAPEO ASOCIATIVO 653 $aMAPEO DE QTLs 653 $aMAPEO POR ASOCIACIÓN 653 $aQTL 653 $aQUANTITATIVE TRAIT LOCI DETECTION 700 1 $aCASTILLO, D. 700 1 $aLADO, B. 700 1 $aMATUS, I. 700 1 $aPOLAND, J. 700 1 $aBELZILE, F. 700 1 $aVON ZITZEWITZ, J. 700 1 $aDEL POZO, A. 773 $tMolecular Breeding, 2015, v,35, no.2, 12 p.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
18/10/2019 |
Tipo de producción científica : |
Serie Técnica |
Autor : |
FORMOSO, F. |
Afiliación : |
FRANCISCO ANTONIO FORMOSO CAVALLERI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Festuca arundinacea, manejo para producción de forraje y semillas. |
Fecha de publicación : |
2010 |
Fuente / Imprenta : |
Montevideo (Uruguay): INIA, 2010. |
Páginas : |
192 p. |
Serie : |
(INIA Serie Técnica; 182) |
ISBN : |
978-9974-38-293-0 |
ISSN : |
1688-9266 |
Idioma : |
Español |
Palabras claves : |
MEZCLAS FORRAJERAS. |
Thesagro : |
ABONOS; CULTIVOS DE INVIERNO; DEFOLIACION; FESTUCA; FESTUCA ARUNDINACEA; FORRAJES; GRAMINEAS FORRAJERAS; MANEJO DE PRADERAS; NITROGENO; PRODUCCION DE SEMILLAS; SEMILLERO; VARIEDADES. |
Asunto categoría : |
-- A50 Investigación agraria |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2529/4/18429081210150440.pdf
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Marc : |
LEADER 00807nam a2200301 a 4500 001 1003406 005 2019-10-18 008 2010 bl uuuu u00u1 u #d 020 $a978-9974-38-293-0 022 $a1688-9266 100 1 $aFORMOSO, F. 245 $aFestuca arundinacea, manejo para producción de forraje y semillas. 260 $aMontevideo (Uruguay): INIA$c2010 300 $a192 p. 490 $a(INIA Serie Técnica; 182) 650 $aABONOS 650 $aCULTIVOS DE INVIERNO 650 $aDEFOLIACION 650 $aFESTUCA 650 $aFESTUCA ARUNDINACEA 650 $aFORRAJES 650 $aGRAMINEAS FORRAJERAS 650 $aMANEJO DE PRADERAS 650 $aNITROGENO 650 $aPRODUCCION DE SEMILLAS 650 $aSEMILLERO 650 $aVARIEDADES 653 $aMEZCLAS FORRAJERAS
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