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Abstract
In wheat, grain number is considered as the product of spike dry weight (SDW) and the number of grains per unit of SDW, that is an indicator of spike fertility (SF). The aim of this study was to determine the heritability of SF and the effect of early selection for high SF on its relationship with other spike yield components. Two field experiments were conducted in the south-eastern Pampas (Argentina) with 400 F2 and F2:3 families obtained from two [ver mas...]
dc.contributor.authorMartino, Diana Laura
dc.contributor.authorAbbate, Pablo Eduardo
dc.contributor.authorCendoya, Maria Gabriela
dc.contributor.authorGutheim, Florencia
dc.contributor.authorMirabella, Nadia Estefania
dc.contributor.authorPontaroli, Ana Clara
dc.date.accessioned2018-05-04T15:33:14Z
dc.date.available2018-05-04T15:33:14Z
dc.date.issued2015
dc.identifier.issn1439-0523
dc.identifier.otherhttps://doi.org/10.1111/pbr.12262
dc.identifier.urihttp://hdl.handle.net/20.500.12123/2326
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/full/10.1111/pbr.12262
dc.description.abstractIn wheat, grain number is considered as the product of spike dry weight (SDW) and the number of grains per unit of SDW, that is an indicator of spike fertility (SF). The aim of this study was to determine the heritability of SF and the effect of early selection for high SF on its relationship with other spike yield components. Two field experiments were conducted in the south-eastern Pampas (Argentina) with 400 F2 and F2:3 families obtained from two crosses between varieties with contrasting SF (PIG/SSN and B10/KCJ). Heritability estimates in PIG/SSN and B10/KCJ were, respectively, 0.60 and 0.51 by variance component analysis, 0.43 and 0.43 by F2 : F3 parent–offspring regression and 0.30 and 0.28 by realized heritability analysis. The existence of transgressive segregation (i.e. the occurrence of families with SF values that were more extreme than those of the parents) was observed. The top 25% F3 families with the highest SF had 12% more grains per spike, despite a 13% and 5% decrease in SDW per spike and weight per grain, respectively, than the remaining families. These results give support to the application of early selection for high SF.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccesseng
dc.sourcePlant breeding 134 (3) : 264–270. (2015)eng
dc.subjectEspigases_AR
dc.subjectTrigoes_AR
dc.subjectFertilidades_AR
dc.subjectHeredabilidades_AR
dc.subjectSelección Precozes_AR
dc.subjectAumento del Rendimientoes_AR
dc.subjectYield Increaseseng
dc.subjectEarly Selectioneng
dc.subjectHeritabilityeng
dc.subjectFertilityeng
dc.titleWheat spike fertility : inheritance and relationship with spike yield components in early generationseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.filFil: Martino, Diana Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Abbate, Pablo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentinaes_AR
dc.description.filFil: Cendoya, Maria Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentinaes_AR
dc.description.filFil: Gutheim, Florencia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Ministerio de Asuntos Agrarios de la Provincia de Buenos Aires. Chacra Experimental Miramar; Argentina,es_AR
dc.description.filFil: Mirabella, Nadia Estefania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentinaes_AR
dc.description.filFDil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.subtypecientifico


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