Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments
Maize (Zea mays L.) production in Argentina changed markedly during the last decade due to the widespread adoption of late sowings, expanding its productive area, and diversifying crop end-uses. This study evaluated environment (two years × two sowing dates) and management practices (two nitrogen le...
| Main Authors: | , , |
|---|---|
| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
| Published: |
2025
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/23642 https://www.biorxiv.org/content/10.1101/2024.09.06.611734v1 https://doi.org/10.1101/2024.09.06.611734 |
| _version_ | 1855038773114437632 |
|---|---|
| author | Chazarreta, Yésica Daniela Álvarez Prado, Santiago Otegui, María Elena |
| author_browse | Chazarreta, Yésica Daniela Otegui, María Elena Álvarez Prado, Santiago |
| author_facet | Chazarreta, Yésica Daniela Álvarez Prado, Santiago Otegui, María Elena |
| author_sort | Chazarreta, Yésica Daniela |
| collection | INTA Digital |
| description | Maize (Zea mays L.) production in Argentina changed markedly during the last decade due to the widespread adoption of late sowings, expanding its productive area, and diversifying crop end-uses. This study evaluated environment (two years × two sowing dates) and management practices (two nitrogen levels) effects on kernel weight, its physiological determinants, source/sink ratios, and water-soluble carbohydrates in stem (WSCS) of eight temperate maize hybrids bred for different uses (3 graniferous, 2 dual-purpose, 2 silage). Crop growth simulations allowed the estimation of percent variation in WSCS remobilization (null, partial, or total) for different production systems (18 scenarios) and climate conditions (41 growing seasons). Nitrogen fertilization increased kernel weight in early sowings, with minimal effects in late sowings. WSCS remobilization during kernel filling was higher in late than in early sowings, with no differences among hybrid types. Regarding hybrid types, dual-purpose and silage hybrids showed the highest and the lowest kernel weight respectively, and graniferous hybrids had the highest source/sink ratio during the effective kernel-filling period. Simulations underscored the importance of sowing date and nitrogen supply on WSCS for irrigated and dryland maize farming systems in a temperate environment, with important implications for grain and silage production at the farm level. |
| format | info:ar-repo/semantics/artículo |
| id | INTA23642 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| record_format | dspace |
| spelling | INTA236422025-09-01T13:14:52Z Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments Chazarreta, Yésica Daniela Álvarez Prado, Santiago Otegui, María Elena Maíz Híbridos Grano Fecha de Siembra Ensilado Maize Hybrids Grain Sowing Date Silage Fertilizer Application Nitrogen Fertilizers Aplicación de Abonos Abonos Nitrogenados Dual-purpose Fertilización Nitrogenada Source/sink Ratio Kernel-filling Rate Kernel-filling Duration Kernel Weight Maize (Zea mays L.) production in Argentina changed markedly during the last decade due to the widespread adoption of late sowings, expanding its productive area, and diversifying crop end-uses. This study evaluated environment (two years × two sowing dates) and management practices (two nitrogen levels) effects on kernel weight, its physiological determinants, source/sink ratios, and water-soluble carbohydrates in stem (WSCS) of eight temperate maize hybrids bred for different uses (3 graniferous, 2 dual-purpose, 2 silage). Crop growth simulations allowed the estimation of percent variation in WSCS remobilization (null, partial, or total) for different production systems (18 scenarios) and climate conditions (41 growing seasons). Nitrogen fertilization increased kernel weight in early sowings, with minimal effects in late sowings. WSCS remobilization during kernel filling was higher in late than in early sowings, with no differences among hybrid types. Regarding hybrid types, dual-purpose and silage hybrids showed the highest and the lowest kernel weight respectively, and graniferous hybrids had the highest source/sink ratio during the effective kernel-filling period. Simulations underscored the importance of sowing date and nitrogen supply on WSCS for irrigated and dryland maize farming systems in a temperate environment, with important implications for grain and silage production at the farm level. EEA Pergamino Fil: Chazarreta, Yésica D. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Chazarreta, Yésica D. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Escuela de Ciencias Agrarias, Naturales y Ambientales; Argentina Fil: Chazarreta, Yésica D. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Álvarez Prado, S. Consejo Nacional de Investigaciones Científicas y Técnicas. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Instituto de Investigaciones en Ciencias Agrarias de Rosario; Argentina Fil: Álvarez Prado, S. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Cátedra de Sistemas de Cultivos Extensivos-GIMUCE; Argentina Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Otegui, María E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina 2025-09-01T12:53:20Z 2025-09-01T12:53:20Z 2024-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/23642 https://www.biorxiv.org/content/10.1101/2024.09.06.611734v1 https://doi.org/10.1101/2024.09.06.611734 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf BioRxiv : the preprint server for biology : 1-47. (September 2024) |
| spellingShingle | Maíz Híbridos Grano Fecha de Siembra Ensilado Maize Hybrids Grain Sowing Date Silage Fertilizer Application Nitrogen Fertilizers Aplicación de Abonos Abonos Nitrogenados Dual-purpose Fertilización Nitrogenada Source/sink Ratio Kernel-filling Rate Kernel-filling Duration Kernel Weight Chazarreta, Yésica Daniela Álvarez Prado, Santiago Otegui, María Elena Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title | Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title_full | Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title_fullStr | Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title_full_unstemmed | Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title_short | Kernel weight and source/sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| title_sort | kernel weight and source sink ratio determination of temperate maize hybrids with different end uses under contrasting environments |
| topic | Maíz Híbridos Grano Fecha de Siembra Ensilado Maize Hybrids Grain Sowing Date Silage Fertilizer Application Nitrogen Fertilizers Aplicación de Abonos Abonos Nitrogenados Dual-purpose Fertilización Nitrogenada Source/sink Ratio Kernel-filling Rate Kernel-filling Duration Kernel Weight |
| url | http://hdl.handle.net/20.500.12123/23642 https://www.biorxiv.org/content/10.1101/2024.09.06.611734v1 https://doi.org/10.1101/2024.09.06.611734 |
| work_keys_str_mv | AT chazarretayesicadaniela kernelweightandsourcesinkratiodeterminationoftemperatemaizehybridswithdifferentendusesundercontrastingenvironments AT alvarezpradosantiago kernelweightandsourcesinkratiodeterminationoftemperatemaizehybridswithdifferentendusesundercontrastingenvironments AT oteguimariaelena kernelweightandsourcesinkratiodeterminationoftemperatemaizehybridswithdifferentendusesundercontrastingenvironments |