Wheat spike fertility : inheritance and relationship with spike yield components in early generations
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 o...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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2018
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| Online Access: | http://hdl.handle.net/20.500.12123/2326 https://onlinelibrary.wiley.com/doi/full/10.1111/pbr.12262 https://doi.org/10.1111/pbr.12262 |
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| author | Martino, Diana Laura Abbate, Pablo Eduardo Cendoya, Maria Gabriela Gutheim, Florencia Mirabella, Nadia Estefania Pontaroli, Ana Clara |
| author_browse | Abbate, Pablo Eduardo Cendoya, Maria Gabriela Gutheim, Florencia Martino, Diana Laura Mirabella, Nadia Estefania Pontaroli, Ana Clara |
| author_facet | Martino, Diana Laura Abbate, Pablo Eduardo Cendoya, Maria Gabriela Gutheim, Florencia Mirabella, Nadia Estefania Pontaroli, Ana Clara |
| author_sort | Martino, Diana Laura |
| collection | INTA Digital |
| description | 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 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. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2326 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA23262019-03-08T13:36:59Z Wheat spike fertility : inheritance and relationship with spike yield components in early generations Martino, Diana Laura Abbate, Pablo Eduardo Cendoya, Maria Gabriela Gutheim, Florencia Mirabella, Nadia Estefania Pontaroli, Ana Clara Espigas Trigo Fertilidad Heredabilidad Selección Precoz Aumento del Rendimiento Yield Increases Early Selection Heritability Fertility 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 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. Fil: 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; Argentina Fil: Abbate, Pablo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Cendoya, Maria Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: 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, Fil: Mirabella, Nadia Estefania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina FDil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2018-05-04T15:33:14Z 2018-05-04T15:33:14Z 2015 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/2326 https://onlinelibrary.wiley.com/doi/full/10.1111/pbr.12262 1439-0523 https://doi.org/10.1111/pbr.12262 eng info:eu-repo/semantics/restrictedAccess application/pdf Plant breeding 134 (3) : 264–270. (2015) |
| spellingShingle | Espigas Trigo Fertilidad Heredabilidad Selección Precoz Aumento del Rendimiento Yield Increases Early Selection Heritability Fertility Martino, Diana Laura Abbate, Pablo Eduardo Cendoya, Maria Gabriela Gutheim, Florencia Mirabella, Nadia Estefania Pontaroli, Ana Clara Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title | Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title_full | Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title_fullStr | Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title_full_unstemmed | Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title_short | Wheat spike fertility : inheritance and relationship with spike yield components in early generations |
| title_sort | wheat spike fertility inheritance and relationship with spike yield components in early generations |
| topic | Espigas Trigo Fertilidad Heredabilidad Selección Precoz Aumento del Rendimiento Yield Increases Early Selection Heritability Fertility |
| url | http://hdl.handle.net/20.500.12123/2326 https://onlinelibrary.wiley.com/doi/full/10.1111/pbr.12262 https://doi.org/10.1111/pbr.12262 |
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