Discriminating post-silking environmental effects on starch composition in maize kernels
Maize (Zea mays L.) endosperms with high amylose proportion are harder and denser than endosperms with low amylose. Environmental conditions could affect amylose/starch ratio. The purpose of this work was to prove the effect of incident solar radiation, temperature, refertilization with nitrogen (N)...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S0733521018309226 http://hdl.handle.net/20.500.12123/5318 https://doi.org/10.1016/j.jcs.2019.03.011 |
| _version_ | 1855035477314240512 |
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| author | Martínez, Roberto D. Cirilo, Alfredo Gabriel Cerrudo, Aníbal Alejandro Andrade, Fernando Hector Izquierdo, Natalia Gabriela |
| author_browse | Andrade, Fernando Hector Cerrudo, Aníbal Alejandro Cirilo, Alfredo Gabriel Izquierdo, Natalia Gabriela Martínez, Roberto D. |
| author_facet | Martínez, Roberto D. Cirilo, Alfredo Gabriel Cerrudo, Aníbal Alejandro Andrade, Fernando Hector Izquierdo, Natalia Gabriela |
| author_sort | Martínez, Roberto D. |
| collection | INTA Digital |
| description | Maize (Zea mays L.) endosperms with high amylose proportion are harder and denser than endosperms with low amylose. Environmental conditions could affect amylose/starch ratio. The purpose of this work was to prove the effect of incident solar radiation, temperature, refertilization with nitrogen (N) and sulfur (S) and source/sink ratio during grain filling on maize amylose/starch ratio. The associations among changes in amylose/starch ratio and other grain components were also analyzed. We evaluated shading treatments in two periods during grain filling period. Fertilization treatments were evaluated by adding extra N and S per hectare in V15. Heating treatments were evaluated by increasing surface grain temperature during the grain filling period. Source/sink ratio was modified via defoliation and plant thinning. Variations in source/sink ratio or refertilization with N and S did not produce significant changes in starch composition. Increases in minimum temperature during early effective grain filling were related to decreases in starch percentage and to increases in amylose/starch ratio. Thus, future maize starch quality studies need to focus on thermal conditions during grain filling and on the metabolic steps involved. According to these results, management practices that imply a modification in temperature during the grain filling period affect starch composition. |
| format | info:ar-repo/semantics/artículo |
| id | INTA5318 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA53182019-06-14T11:46:43Z Discriminating post-silking environmental effects on starch composition in maize kernels Martínez, Roberto D. Cirilo, Alfredo Gabriel Cerrudo, Aníbal Alejandro Andrade, Fernando Hector Izquierdo, Natalia Gabriela Maíz Temperatura Granos Defoliación Almidón de Maíz Maize Temperature Grain Defoliation Corn Starch Refertilización Llenado de grano Maize (Zea mays L.) endosperms with high amylose proportion are harder and denser than endosperms with low amylose. Environmental conditions could affect amylose/starch ratio. The purpose of this work was to prove the effect of incident solar radiation, temperature, refertilization with nitrogen (N) and sulfur (S) and source/sink ratio during grain filling on maize amylose/starch ratio. The associations among changes in amylose/starch ratio and other grain components were also analyzed. We evaluated shading treatments in two periods during grain filling period. Fertilization treatments were evaluated by adding extra N and S per hectare in V15. Heating treatments were evaluated by increasing surface grain temperature during the grain filling period. Source/sink ratio was modified via defoliation and plant thinning. Variations in source/sink ratio or refertilization with N and S did not produce significant changes in starch composition. Increases in minimum temperature during early effective grain filling were related to decreases in starch percentage and to increases in amylose/starch ratio. Thus, future maize starch quality studies need to focus on thermal conditions during grain filling and on the metabolic steps involved. According to these results, management practices that imply a modification in temperature during the grain filling period affect starch composition. EEA Pergamino Fil: Martínez, Roberto D. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Cirilo, Alfredo Gabriel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina Fil: Cerrudo, Anibal Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Andrade, Fernando Hector. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas (CONICET); Argentina Fil: Izquierdo, Natalia Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas; Argentina 2019-06-14T11:39:33Z 2019-06-14T11:39:33Z 2019-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0733521018309226 http://hdl.handle.net/20.500.12123/5318 0733-5210 https://doi.org/10.1016/j.jcs.2019.03.011 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Journal of Cereal Science 87 : 150-156 (May 2019) |
| spellingShingle | Maíz Temperatura Granos Defoliación Almidón de Maíz Maize Temperature Grain Defoliation Corn Starch Refertilización Llenado de grano Martínez, Roberto D. Cirilo, Alfredo Gabriel Cerrudo, Aníbal Alejandro Andrade, Fernando Hector Izquierdo, Natalia Gabriela Discriminating post-silking environmental effects on starch composition in maize kernels |
| title | Discriminating post-silking environmental effects on starch composition in maize kernels |
| title_full | Discriminating post-silking environmental effects on starch composition in maize kernels |
| title_fullStr | Discriminating post-silking environmental effects on starch composition in maize kernels |
| title_full_unstemmed | Discriminating post-silking environmental effects on starch composition in maize kernels |
| title_short | Discriminating post-silking environmental effects on starch composition in maize kernels |
| title_sort | discriminating post silking environmental effects on starch composition in maize kernels |
| topic | Maíz Temperatura Granos Defoliación Almidón de Maíz Maize Temperature Grain Defoliation Corn Starch Refertilización Llenado de grano |
| url | https://www.sciencedirect.com/science/article/pii/S0733521018309226 http://hdl.handle.net/20.500.12123/5318 https://doi.org/10.1016/j.jcs.2019.03.011 |
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