Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops
Postflowering heat stress causes the arrest of kernel growth, increasing kernel protein concentration and the relative abundance of γ-zeins, two biochemical traits contributing to maize (Zea mays L.) hardness. The impact of early and late postflowering heat stress on kernel physical traits related t...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Crop Science Society of America
2019
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| Subjects: | |
| Online Access: | https://dl.sciencesocieties.org/publications/cs/abstracts/59/1/318 http://hdl.handle.net/20.500.12123/6574 https://doi.org/10.2135/cropsci2018.04.0245 |
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| author | Mayer, Luis Ignacio Cirilo, Alfredo Gabriel Maddonni, Gustavo Angel |
| author_browse | Cirilo, Alfredo Gabriel Maddonni, Gustavo Angel Mayer, Luis Ignacio |
| author_facet | Mayer, Luis Ignacio Cirilo, Alfredo Gabriel Maddonni, Gustavo Angel |
| author_sort | Mayer, Luis Ignacio |
| collection | INTA Digital |
| description | Postflowering heat stress causes the arrest of kernel growth, increasing kernel protein concentration and the relative abundance of γ-zeins, two biochemical traits contributing to maize (Zea mays L.) hardness. The impact of early and late postflowering heat stress on kernel physical traits related to hardness was studied on field-grown maize hybrids differing in their prevailing endosperm texture (two hybrids with a vitreous texture, and two others with a floury texture). Kernel texture was softened by heat stress (P < 0.001), as indicated by decreases in traits that are usually positively related to hardness (thousand-kernel weight [up to 185 g], proportion of large kernels [up to 50–65 percentage points], kernel or bulk density [up to 7 kg hL−1] and milling ratio [up to 1 g g−1]) and increases in those usually negatively related (proportion of the smaller kernels and floater percentage [up to 30 and 75 percentage points, respectively]). Most of these effects were larger (P < 0.01), as heat stress occurred earlier in the grain-filling period. Kernel physical traits of the genotypes with a predominantly floury texture varied the most (P < 0.05) in response to heat stress. Genotypic and environmental variation effects in most hardness-related traits could be accounted for by kernel density (r2 = 0.74–0.87) or bulk density (r2 = 0.79–0.93). Sowing date and genotype selections should be considered as crop management practices for reducing or preventing the potential impact of heat stress on maize hardness. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6574 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Crop Science Society of America |
| publisherStr | Crop Science Society of America |
| record_format | dspace |
| spelling | INTA65742021-03-11T11:52:19Z Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops Mayer, Luis Ignacio Cirilo, Alfredo Gabriel Maddonni, Gustavo Angel Maíz Llenado Granos Cultivo Temperatura Ambiental Maize Filling Grain Cultivation Environmental Temperature Heat Stress Estrés Térmico Postflowering heat stress causes the arrest of kernel growth, increasing kernel protein concentration and the relative abundance of γ-zeins, two biochemical traits contributing to maize (Zea mays L.) hardness. The impact of early and late postflowering heat stress on kernel physical traits related to hardness was studied on field-grown maize hybrids differing in their prevailing endosperm texture (two hybrids with a vitreous texture, and two others with a floury texture). Kernel texture was softened by heat stress (P < 0.001), as indicated by decreases in traits that are usually positively related to hardness (thousand-kernel weight [up to 185 g], proportion of large kernels [up to 50–65 percentage points], kernel or bulk density [up to 7 kg hL−1] and milling ratio [up to 1 g g−1]) and increases in those usually negatively related (proportion of the smaller kernels and floater percentage [up to 30 and 75 percentage points, respectively]). Most of these effects were larger (P < 0.01), as heat stress occurred earlier in the grain-filling period. Kernel physical traits of the genotypes with a predominantly floury texture varied the most (P < 0.05) in response to heat stress. Genotypic and environmental variation effects in most hardness-related traits could be accounted for by kernel density (r2 = 0.74–0.87) or bulk density (r2 = 0.79–0.93). Sowing date and genotype selections should be considered as crop management practices for reducing or preventing the potential impact of heat stress on maize hardness. EEA Pergamino Fil: Mayer, Luis Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentina Fil: Cirilo, Alfredo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina Fil: Maddonni, Gustavo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina 2019-12-26T13:51:28Z 2019-12-26T13:51:28Z 2019-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://dl.sciencesocieties.org/publications/cs/abstracts/59/1/318 http://hdl.handle.net/20.500.12123/6574 0011-183X 1435-0653 (online) https://doi.org/10.2135/cropsci2018.04.0245 eng info:eu-repo/semantics/restrictedAccess application/pdf Crop Science Society of America Crop Science 59 (1) : 318-332. (Jenuary-February 2019) |
| spellingShingle | Maíz Llenado Granos Cultivo Temperatura Ambiental Maize Filling Grain Cultivation Environmental Temperature Heat Stress Estrés Térmico Mayer, Luis Ignacio Cirilo, Alfredo Gabriel Maddonni, Gustavo Angel Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title | Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title_full | Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title_fullStr | Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title_full_unstemmed | Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title_short | Kernel hardness-related traits in response to heat stress during the grain-filling period of maize crops |
| title_sort | kernel hardness related traits in response to heat stress during the grain filling period of maize crops |
| topic | Maíz Llenado Granos Cultivo Temperatura Ambiental Maize Filling Grain Cultivation Environmental Temperature Heat Stress Estrés Térmico |
| url | https://dl.sciencesocieties.org/publications/cs/abstracts/59/1/318 http://hdl.handle.net/20.500.12123/6574 https://doi.org/10.2135/cropsci2018.04.0245 |
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