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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha : |
05/09/2014 |
Actualizado : |
24/06/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
REYNO, R.; NARANCIO, R.; SPERANZA, P.; DO CANTO, J.; LOPEZ-CARRO, B.; HERNANDEZ, P.; BURGUEÑO, J.; REAL, D.; DALLA RIZZA, M. |
Afiliación : |
RAFAEL ALEJANDRO REYNO PODESTA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; RAFAEL NARANCIO FERES, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; JAVIER DO CANTO FAGUNDEZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; DANIEL REAL FERREIRO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; MARCO DALLA RIZZA VILARO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Molecular and cytogenetic characterization of a collection of bahiagrass (Paspalum notatum Flügge) native to Uruguay. |
Fecha de publicación : |
2012 |
Fuente / Imprenta : |
Genetic Resources and Crop Evolution, 2012, v. 59, no.8, p. 1823-1832. |
ISSN : |
0925-9864 |
DOI : |
10.1007/s10722-012-9806-x |
Idioma : |
Inglés |
Notas : |
Article history: Received: 9 August 2011 / Accepted: 30 January 2012 / Published online: 22 February 2012. |
Contenido : |
ABSTRACT.
Paspalum notatum is a subtropical grass present throughout America, and one of the main constituents of the natural grasslands in Uruguay. An
apomictic autotetraploid (2n = 4x = 40) is the most frequent cytotype. The occurrence of sexual diploids (2n = 2x = 20) has also been reported as well as the occasional presence of apomictic triploids and pentaploids in Argentina. In this study, ISSR (inter simple sequence repeats) molecular markers were used to analyze the genetic variability of 210 P. notatum individuals from a collection from Uruguay. Cytometric analyses and chromosome counts were used to assess the ploidy level of the individuals. All plants from Uruguay analyzed were tetraploid. Intra- and inter-population variability was found both in genomic DNA content and at the genotypic level. Several multilocus genotypes were shared among individuals within populations and among populations over moderate geographical ranges, at the same time, very dissimilar genotypes were found within the same population. Part of the genetic variance among populations can be explained by a broader scale geographic structure which is partly coincident with the traditionally recognized grassland management regions. In spite of the apparently high degree of genetic admixture within populations, groups of related genotypes seem to follow a broader geographical structure in the area under study. These results suggest that an efficient collection strategy for this apomictically reproducing species should include carefully planned intra- and inter-population sampling. A broader scale regional sampling strategy should also be considered although further studies will be required to define genetic structure at this level.
© 2012 Springer Science+Business Media B.V. MenosABSTRACT.
Paspalum notatum is a subtropical grass present throughout America, and one of the main constituents of the natural grasslands in Uruguay. An
apomictic autotetraploid (2n = 4x = 40) is the most frequent cytotype. The occurrence of sexual diploids (2n = 2x = 20) has also been reported as well as the occasional presence of apomictic triploids and pentaploids in Argentina. In this study, ISSR (inter simple sequence repeats) molecular markers were used to analyze the genetic variability of 210 P. notatum individuals from a collection from Uruguay. Cytometric analyses and chromosome counts were used to assess the ploidy level of the individuals. All plants from Uruguay analyzed were tetraploid. Intra- and inter-population variability was found both in genomic DNA content and at the genotypic level. Several multilocus genotypes were shared among individuals within populations and among populations over moderate geographical ranges, at the same time, very dissimilar genotypes were found within the same population. Part of the genetic variance among populations can be explained by a broader scale geographic structure which is partly coincident with the traditionally recognized grassland management regions. In spite of the apparently high degree of genetic admixture within populations, groups of related genotypes seem to follow a broader geographical structure in the area under study. These results suggest that an efficient collection strategy for this apomictically reprod... Presentar Todo |
Thesagro : |
MARCADORES GENÉTICOS; PASPALUM NOTATUM; PLANTAS FORRAJERAS. |
Asunto categoría : |
-- F30 Genética vegetal y fitomejoramiento |
Marc : |
LEADER 02728naa a2200289 a 4500 001 1051274 005 2021-06-24 008 2012 bl uuuu u00u1 u #d 022 $a0925-9864 024 7 $a10.1007/s10722-012-9806-x$2DOI 100 1 $aREYNO, R. 245 $aMolecular and cytogenetic characterization of a collection of bahiagrass (Paspalum notatum Flügge) native to Uruguay. 260 $c2012 500 $aArticle history: Received: 9 August 2011 / Accepted: 30 January 2012 / Published online: 22 February 2012. 520 $aABSTRACT. Paspalum notatum is a subtropical grass present throughout America, and one of the main constituents of the natural grasslands in Uruguay. An apomictic autotetraploid (2n = 4x = 40) is the most frequent cytotype. The occurrence of sexual diploids (2n = 2x = 20) has also been reported as well as the occasional presence of apomictic triploids and pentaploids in Argentina. In this study, ISSR (inter simple sequence repeats) molecular markers were used to analyze the genetic variability of 210 P. notatum individuals from a collection from Uruguay. Cytometric analyses and chromosome counts were used to assess the ploidy level of the individuals. All plants from Uruguay analyzed were tetraploid. Intra- and inter-population variability was found both in genomic DNA content and at the genotypic level. Several multilocus genotypes were shared among individuals within populations and among populations over moderate geographical ranges, at the same time, very dissimilar genotypes were found within the same population. Part of the genetic variance among populations can be explained by a broader scale geographic structure which is partly coincident with the traditionally recognized grassland management regions. In spite of the apparently high degree of genetic admixture within populations, groups of related genotypes seem to follow a broader geographical structure in the area under study. These results suggest that an efficient collection strategy for this apomictically reproducing species should include carefully planned intra- and inter-population sampling. A broader scale regional sampling strategy should also be considered although further studies will be required to define genetic structure at this level. © 2012 Springer Science+Business Media B.V. 650 $aMARCADORES GENÉTICOS 650 $aPASPALUM NOTATUM 650 $aPLANTAS FORRAJERAS 700 1 $aNARANCIO, R. 700 1 $aSPERANZA, P. 700 1 $aDO CANTO, J. 700 1 $aLOPEZ-CARRO, B. 700 1 $aHERNANDEZ, P. 700 1 $aBURGUEÑO, J. 700 1 $aREAL, D. 700 1 $aDALLA RIZZA, M. 773 $tGenetic Resources and Crop Evolution, 2012$gv. 59, no.8, p. 1823-1832.
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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 : |
10/04/2017 |
Tipo de producción científica : |
Serie Técnica |
Autor : |
CHIARA, G.; FERREIRA, G. (Ed.). |
Afiliación : |
GUSTAVO CHIARA, Investigador Asesor Economía, Uruguay; GUSTAVO ALVARO FERREIRA DE MATTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Dinámica de la ganadería vacuna en Uruguay. |
Complemento del título : |
Dynamics of beef cattle in Uruguay A simulation model. |
Fecha de publicación : |
2011 |
Fuente / Imprenta : |
Montevideo (UY): INIA, 2011. |
Páginas : |
32 p. |
Serie : |
(INIA Serie Técnica; 196) |
ISBN : |
978-9974-38-339-5 |
ISSN : |
1688-9266 |
Idioma : |
Español |
Contenido : |
SUMMARY.
Competitiveness and profitability of livestock production systems are of paramount importance nowadays. Dynamic competitiveness requires knowledge as a key component to make more informed decisions, and in this regard we usually use mental models, which are built on the basis of our experience and previous knowledge. However, in the understanding of complex systems, simulation models are of great assistance in decision making. The aim of this models is to capture the relationships between technological as well
as economic variables. In this way it is possible to experiment and asses the bioeconomic impact of alternative scenarios. This paper describes a simulation model developed using systems approach and development dynamic tools such as “iThink” in order to better understand the livestock production sector in Uruguay. The purpose is to offer a conceptual framework to analyze how different variables and parameters can affect livestock production systems performance at a national level. |
Thesagro : |
GANADERIA; PRODUCCION ANIMAL; PRODUCCION DE CARNE; URUGUAY. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2541/1/18429030212144510.pdf
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Marc : |
LEADER 01561nam a2200217 a 4500 001 1003451 005 2017-04-10 008 2011 bl uuuu u00u1 u #d 020 $a978-9974-38-339-5 022 $a1688-9266 100 1 $aCHIARA, G. 245 $aDinámica de la ganadería vacuna en Uruguay. 260 $aMontevideo (UY): INIA$c2011 300 $a32 p. 490 $a(INIA Serie Técnica; 196) 520 $aSUMMARY. Competitiveness and profitability of livestock production systems are of paramount importance nowadays. Dynamic competitiveness requires knowledge as a key component to make more informed decisions, and in this regard we usually use mental models, which are built on the basis of our experience and previous knowledge. However, in the understanding of complex systems, simulation models are of great assistance in decision making. The aim of this models is to capture the relationships between technological as well as economic variables. In this way it is possible to experiment and asses the bioeconomic impact of alternative scenarios. This paper describes a simulation model developed using systems approach and development dynamic tools such as “iThink” in order to better understand the livestock production sector in Uruguay. The purpose is to offer a conceptual framework to analyze how different variables and parameters can affect livestock production systems performance at a national level. 650 $aGANADERIA 650 $aPRODUCCION ANIMAL 650 $aPRODUCCION DE CARNE 650 $aURUGUAY 700 1 $aFERREIRA, G.
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