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| 2. |  | AMORENA, B.; BASELGA, R.; AGUILAR, B.; ITURRALDE, M.; BLASCO, J.M.; ZORRAQUINO, M.A.; ECHEVERRÍA, J.M.; SANCHO, F.; FERRER, L.M.; MARCO, J.; GARCIA DE JALÓN, J.A.; DUCHA, J.; LATRE, M.V.; LARA, C.; TEJEDOR, T. Prevención y lucha frente a la mamitis en ganado vacuno lechero. Zaragoza (España): Diputación General de Aragón. Departamento de Agricultura, Ganadería y Montes, 1990. 31 p (Serie Estudios Agrarios)| Biblioteca(s): INIA Tacuarembó. |
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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
30/10/2014 |
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Actualizado : |
29/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 2 |
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Autor : |
CONDON, F.; RASSMUSON. D.C.; SCHIEFEILBEIN, E. P.; VELAZQUEZ ,G.; SMITH, K. |
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Afiliación : |
FEDERICO CONDON PRIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of advanced cycle breeding on genetic gain and phenotypic diversity in barley breeding germplasm. |
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Fecha de publicación : |
2009 |
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Fuente / Imprenta : |
Crop Science , 49, n.5, p.1751-1761, 2009. |
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DOI : |
10.2135/cropsci2008.10.0585 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received: Oct 6, 2008 / Published: Sept, 2009. |
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Contenido : |
Plant breeding with elite parents within closed populations has proven to be a successful strategy to achieve genetic gains and conserve favorable gene complexes. To investigate the effects of advanced cycle breeding on genetic gain, phenotypic variation, and germplasm differentiation, 15 agronomic and malting quality traits were evaluated for a set 98 genotypes including ancestors, parental founders, and elite breeding lines developed at the University of Minnesota barley (Hordeum vulgare L.) breeding program between 1958 and 1998. The material was evaluated in five trials at three locations in 2002 and 2003. Significant gains were observed for 11 traits during the 40-yr period of advanced cycle breeding, including yield, lodging, malt extract, and wort beta-glucan content. In parallel, we observed a change in phenotypic variance for seven traits while eight traits, including yield, showed no change. Of the seven traits that showed a change in variance, five showed a reduction, one increased, and one was variable.There were significant correlations among most of the traits, most likely due to simultaneous selection. A principal component analysis explaining 58.1% of the variation showed differentiation of the most recent breeding lines from the breeding program founders. Retrospective analysis of changes in genetic gain and phenotypic variance can be useful in designing strategies to manage genetic variation for target traits in breeding programs.
© Crop Science Society of America. MenosPlant breeding with elite parents within closed populations has proven to be a successful strategy to achieve genetic gains and conserve favorable gene complexes. To investigate the effects of advanced cycle breeding on genetic gain, phenotypic variation, and germplasm differentiation, 15 agronomic and malting quality traits were evaluated for a set 98 genotypes including ancestors, parental founders, and elite breeding lines developed at the University of Minnesota barley (Hordeum vulgare L.) breeding program between 1958 and 1998. The material was evaluated in five trials at three locations in 2002 and 2003. Significant gains were observed for 11 traits during the 40-yr period of advanced cycle breeding, including yield, lodging, malt extract, and wort beta-glucan content. In parallel, we observed a change in phenotypic variance for seven traits while eight traits, including yield, showed no change. Of the seven traits that showed a change in variance, five showed a reduction, one increased, and one was variable.There were significant correlations among most of the traits, most likely due to simultaneous selection. A principal component analysis explaining 58.1% of the variation showed differentiation of the most recent breeding lines from the breeding program founders. Retrospective analysis of changes in genetic gain and phenotypic variance can be useful in designing strategies to manage genetic variation for target traits in breeding programs.
© Crop Science Society of... Presentar Todo |
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Thesagro : |
MEJORAMIENTO GENETICO DE PLANTA; RECURSOS GENETICOS VEGETALES. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02247naa a2200217 a 4500
001 1051382
005 2020-01-29
008 2009 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2008.10.0585$2DOI
100 1 $aCONDON, F.
245 $aEffect of advanced cycle breeding on genetic gain and phenotypic diversity in barley breeding germplasm.$h[electronic resource]
260 $c2009
500 $aArticle history: Received: Oct 6, 2008 / Published: Sept, 2009.
520 $aPlant breeding with elite parents within closed populations has proven to be a successful strategy to achieve genetic gains and conserve favorable gene complexes. To investigate the effects of advanced cycle breeding on genetic gain, phenotypic variation, and germplasm differentiation, 15 agronomic and malting quality traits were evaluated for a set 98 genotypes including ancestors, parental founders, and elite breeding lines developed at the University of Minnesota barley (Hordeum vulgare L.) breeding program between 1958 and 1998. The material was evaluated in five trials at three locations in 2002 and 2003. Significant gains were observed for 11 traits during the 40-yr period of advanced cycle breeding, including yield, lodging, malt extract, and wort beta-glucan content. In parallel, we observed a change in phenotypic variance for seven traits while eight traits, including yield, showed no change. Of the seven traits that showed a change in variance, five showed a reduction, one increased, and one was variable.There were significant correlations among most of the traits, most likely due to simultaneous selection. A principal component analysis explaining 58.1% of the variation showed differentiation of the most recent breeding lines from the breeding program founders. Retrospective analysis of changes in genetic gain and phenotypic variance can be useful in designing strategies to manage genetic variation for target traits in breeding programs. © Crop Science Society of America.
650 $aMEJORAMIENTO GENETICO DE PLANTA
650 $aRECURSOS GENETICOS VEGETALES
700 1 $aRASSMUSON. D.C.
700 1 $aSCHIEFEILBEIN, E. P.
700 1 $aVELAZQUEZ ,G.
700 1 $aSMITH, K.
773 $tCrop Science , 49$gn.5, p.1751-1761, 2009.
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