Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding
Maize (Zea Mays L.) grain yield have increased during the last decades and there is an ample range of rates of grain yield increments reported in the literature. Maize hybrids comparison at their optimum plant density might contribute to elucidate the yield potential increments during the last decad...
| Autores principales: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0378429016302349 http://hdl.handle.net/20.500.12123/4983 https://doi.org/10.1016/j.fcr.2016.07.023 |
| _version_ | 1855483532800950272 |
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| author | Di Matteo, Javier. A Ferreyra, J.M. Cerrudo, Aníbal Alejandro Echarte, Laura Andrade, Fernando Hector |
| author_browse | Andrade, Fernando Hector Cerrudo, Aníbal Alejandro Di Matteo, Javier. A Echarte, Laura Ferreyra, J.M. |
| author_facet | Di Matteo, Javier. A Ferreyra, J.M. Cerrudo, Aníbal Alejandro Echarte, Laura Andrade, Fernando Hector |
| author_sort | Di Matteo, Javier. A |
| collection | INTA Digital |
| description | Maize (Zea Mays L.) grain yield have increased during the last decades and there is an ample range of rates of grain yield increments reported in the literature. Maize hybrids comparison at their optimum plant density might contribute to elucidate the yield potential increments during the last decades. In addition, high plant density testing and multi-location trials in modern breeding programs might have contributed to greater stress tolerance in modern hybrids. Then, a close relationship between tolerance to high plant density and yield stability in hybrids released in different decades is expected. The objectives of this study were (i) to determine the optimum plant density and the gain in yield potential and its components, and (ii) to test the hypothesis that tolerance to high plant densities and yield stability are strongly associated, for Argentinean maize hybrids released between 1965 and 2010. One set of experiments was conducted at Balcarce, Argentina during five growing seasons (Exps. 1–5), each experiment included a combination of plant densities (1.5–20 plants m−2) and hybrids released in different years (1965–2010). Data from these experiments were used to estimate optimum plant density, gains in yield potential and tolerance to high plant density. Another experiment (Exp. 6) included 18 trials conducted in a wide range of environments and data from these trials were used to estimate yield stability. The optimum density to attain the maximum yield ranged from 9.7 to 16.4 pl m−2 and it did not present a clear trend with the year of hybrid release. Yield potential increased at a rate of 0.83% or 107 kg ha−1 year−1 (p < 0.001) and yield increments were attributed mainly to gains in kernel number per unit area and to biomass production steady increments during the 1965–2010 period. Harvest index contributions to yield increments were important for the period 1980–1993, but HI remained stable during the last two decades. Yield stability increased with the year of hybrid release, in accordance with higher mean yields and lower CV (coefficient of variation) across environments of modern compared with older hybrids. Tolerance to high plant densities increased during the last 45 years and it was direct and significantly associated with yield stability, providing strong bases for the use of high plant densities as a method to attain gains in yield stability. |
| format | Artículo |
| id | INTA4983 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA49832019-04-25T14:01:25Z Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding Di Matteo, Javier. A Ferreyra, J.M. Cerrudo, Aníbal Alejandro Echarte, Laura Andrade, Fernando Hector Maíz Rendimiento Híbridos Caracteres de Rendimiento Fitomejoramiento Maize Yields Hybrids Yield Components Plant Breeding Maize (Zea Mays L.) grain yield have increased during the last decades and there is an ample range of rates of grain yield increments reported in the literature. Maize hybrids comparison at their optimum plant density might contribute to elucidate the yield potential increments during the last decades. In addition, high plant density testing and multi-location trials in modern breeding programs might have contributed to greater stress tolerance in modern hybrids. Then, a close relationship between tolerance to high plant density and yield stability in hybrids released in different decades is expected. The objectives of this study were (i) to determine the optimum plant density and the gain in yield potential and its components, and (ii) to test the hypothesis that tolerance to high plant densities and yield stability are strongly associated, for Argentinean maize hybrids released between 1965 and 2010. One set of experiments was conducted at Balcarce, Argentina during five growing seasons (Exps. 1–5), each experiment included a combination of plant densities (1.5–20 plants m−2) and hybrids released in different years (1965–2010). Data from these experiments were used to estimate optimum plant density, gains in yield potential and tolerance to high plant density. Another experiment (Exp. 6) included 18 trials conducted in a wide range of environments and data from these trials were used to estimate yield stability. The optimum density to attain the maximum yield ranged from 9.7 to 16.4 pl m−2 and it did not present a clear trend with the year of hybrid release. Yield potential increased at a rate of 0.83% or 107 kg ha−1 year−1 (p < 0.001) and yield increments were attributed mainly to gains in kernel number per unit area and to biomass production steady increments during the 1965–2010 period. Harvest index contributions to yield increments were important for the period 1980–1993, but HI remained stable during the last two decades. Yield stability increased with the year of hybrid release, in accordance with higher mean yields and lower CV (coefficient of variation) across environments of modern compared with older hybrids. Tolerance to high plant densities increased during the last 45 years and it was direct and significantly associated with yield stability, providing strong bases for the use of high plant densities as a method to attain gains in yield stability. EEA Balcarce Fil: Di Matteo, Javier Antonio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. University of Guelph. Department of Plant Agriculture; Canadá Fil: Ferreyra, J. M.. Monsanto; Argentina Fil: Cerrudo, Aníbal Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Fil: Andrade, Fernando Hector. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2019-04-25T13:59:23Z 2019-04-25T13:59:23Z 2016-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0378429016302349 http://hdl.handle.net/20.500.12123/4983 0378-4290 https://doi.org/10.1016/j.fcr.2016.07.023 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Field Crops Research 197 : 107-116 (October 2016) |
| spellingShingle | Maíz Rendimiento Híbridos Caracteres de Rendimiento Fitomejoramiento Maize Yields Hybrids Yield Components Plant Breeding Di Matteo, Javier. A Ferreyra, J.M. Cerrudo, Aníbal Alejandro Echarte, Laura Andrade, Fernando Hector Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title | Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title_full | Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title_fullStr | Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title_full_unstemmed | Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title_short | Yield potential and yield stability of Argentine maize hybrids over 45 years of breeding |
| title_sort | yield potential and yield stability of argentine maize hybrids over 45 years of breeding |
| topic | Maíz Rendimiento Híbridos Caracteres de Rendimiento Fitomejoramiento Maize Yields Hybrids Yield Components Plant Breeding |
| url | https://www.sciencedirect.com/science/article/pii/S0378429016302349 http://hdl.handle.net/20.500.12123/4983 https://doi.org/10.1016/j.fcr.2016.07.023 |
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