Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield
In the Argentinean Andean region, maize is a main staple being cropped up to 3,900 m above sea level (masl). Yields are limited by the sharp decrease in temperature associated with altitude but also by a lack of management and breeding technologies to underpin traditional practices. In this review w...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Maximum Academic Press
2023
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/16032 https://www.maxapress.com/article/doi/10.48130/TIA-2023-0014 https://doi.org/10.48130/TIA-2023-0014 |
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| author | Salve, Diego Antonio Ferreyra, Mariana Jimena Defacio, Raquel Alicia Maydup, María L. Lauff, Diana B. Tambussi, Eduardo A. Antonietta, Mariana |
| author_browse | Antonietta, Mariana Defacio, Raquel Alicia Ferreyra, Mariana Jimena Lauff, Diana B. Maydup, María L. Salve, Diego Antonio Tambussi, Eduardo A. |
| author_facet | Salve, Diego Antonio Ferreyra, Mariana Jimena Defacio, Raquel Alicia Maydup, María L. Lauff, Diana B. Tambussi, Eduardo A. Antonietta, Mariana |
| author_sort | Salve, Diego Antonio |
| collection | INTA Digital |
| description | In the Argentinean Andean region, maize is a main staple being cropped up to 3,900 m above sea level (masl). Yields are limited by the sharp decrease in temperature associated with altitude but also by a lack of management and breeding technologies to underpin traditional practices. In this review we discuss: (i) the main physiological changes of increasing altitude using experimental reports up to 2,650 m above sea level plus own experiments up to 3,300 masl; (ii) available genetic diversity within local races; (iii) maize cropping systems based on literature and own data from 23 surveys; and (iv) possible avenues for improving yield. Among physiological traits, major penalties are associated with delayed phenology reducing light capture, and low temperatures inhibiting photosynthesis and kernel growth rate. As a result, yields can be reduced up to 85% at 3,300 masl compared with 2,300 masl in contrast to increases at lower latitudes. Local races are characterized by a high genetic diversity that is aiming to be preserved by both in situ and ex situ conservation initiatives. However, little is known about phenotypic variation, impairing the exploitation of these genetic resources in breeding programs. Breeding strategies could consider tillering ability (to buffer stand heterogeneity) and photosynthetic recovery rates from chilling as important target traits, whereas plant density management could overcome penalties related with delayed plantings and phenology. Water availability is currently insufficient, especially at higher altitudes where most farmers rely on water from thaw, and climate change projections suggest this will worsen; thus improving water use efficiency also deserves further work. |
| format | info:ar-repo/semantics/artículo |
| id | INTA16032 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Maximum Academic Press |
| publisherStr | Maximum Academic Press |
| record_format | dspace |
| spelling | INTA160322023-11-28T11:22:44Z Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield Salve, Diego Antonio Ferreyra, Mariana Jimena Defacio, Raquel Alicia Maydup, María L. Lauff, Diana B. Tambussi, Eduardo A. Antonietta, Mariana Maíz Rendimiento Variación Genética Fisiología Gestión Maize Yields Genetic Variation Physiology Management Argentina Maíz Andino Región Andina In the Argentinean Andean region, maize is a main staple being cropped up to 3,900 m above sea level (masl). Yields are limited by the sharp decrease in temperature associated with altitude but also by a lack of management and breeding technologies to underpin traditional practices. In this review we discuss: (i) the main physiological changes of increasing altitude using experimental reports up to 2,650 m above sea level plus own experiments up to 3,300 masl; (ii) available genetic diversity within local races; (iii) maize cropping systems based on literature and own data from 23 surveys; and (iv) possible avenues for improving yield. Among physiological traits, major penalties are associated with delayed phenology reducing light capture, and low temperatures inhibiting photosynthesis and kernel growth rate. As a result, yields can be reduced up to 85% at 3,300 masl compared with 2,300 masl in contrast to increases at lower latitudes. Local races are characterized by a high genetic diversity that is aiming to be preserved by both in situ and ex situ conservation initiatives. However, little is known about phenotypic variation, impairing the exploitation of these genetic resources in breeding programs. Breeding strategies could consider tillering ability (to buffer stand heterogeneity) and photosynthetic recovery rates from chilling as important target traits, whereas plant density management could overcome penalties related with delayed plantings and phenology. Water availability is currently insufficient, especially at higher altitudes where most farmers rely on water from thaw, and climate change projections suggest this will worsen; thus improving water use efficiency also deserves further work. EEA Pergamino Fil: Salve, Diego Antonio. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación y Desarrollo Tecnológico para la Agricultura Familiar Región NOA; Argentina Fil: Ferreyra, Mariana Jimena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina Fil: Maydup, M. L. Universidad Nacional de La Plata. Instituto de Fisiología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Fisiología Vegetal; Argentina Fil: Lauff, Diana B. Universidad Nacional de La Plata. Instituto de Fisiología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Fisiología Vegetal; Argentina Fil: Tambussi, Eduardo A. Universidad Nacional de La Plata. Instituto de Fisiología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Fisiología Vegetal; Argentina Fil: Antonietta, M. Universidad Nacional de La Plata. Instituto de Fisiología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Fisiología Vegetal; Argentina 2023-11-28T11:12:41Z 2023-11-28T11:12:41Z 2023-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/16032 https://www.maxapress.com/article/doi/10.48130/TIA-2023-0014 2835-9445 (online) https://doi.org/10.48130/TIA-2023-0014 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 Maximum Academic Press Technology in Agronomy 3 : 14 (November 2023) |
| spellingShingle | Maíz Rendimiento Variación Genética Fisiología Gestión Maize Yields Genetic Variation Physiology Management Argentina Maíz Andino Región Andina Salve, Diego Antonio Ferreyra, Mariana Jimena Defacio, Raquel Alicia Maydup, María L. Lauff, Diana B. Tambussi, Eduardo A. Antonietta, Mariana Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title | Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title_full | Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title_fullStr | Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title_full_unstemmed | Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title_short | Andean maize in Argentina : physiological effects related with altitude, genetic variation, management practices and possible avenues to improve yield |
| title_sort | andean maize in argentina physiological effects related with altitude genetic variation management practices and possible avenues to improve yield |
| topic | Maíz Rendimiento Variación Genética Fisiología Gestión Maize Yields Genetic Variation Physiology Management Argentina Maíz Andino Región Andina |
| url | http://hdl.handle.net/20.500.12123/16032 https://www.maxapress.com/article/doi/10.48130/TIA-2023-0014 https://doi.org/10.48130/TIA-2023-0014 |
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