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The light attenuation process within a plant canopy defines energy capture and vertical distribution of light and nitrogen (N). The vertical light distribution can be quantitatively described with the extinction coefficient (k), which associates the fraction of intercepted photosynthetically active radiation (fPARi) with the leaf area index (LAI). Lower values of k correspond to upright leaves and homogeneous vertical light distribution, increasing
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dc.contributor.author | Lacasa, Josefina | |
dc.contributor.author | Ciampitti, Ignacio A. | |
dc.contributor.author | Amas, Juan Ignacio | |
dc.contributor.author | Curín, Facundo | |
dc.contributor.author | Luque, Sergio F. | |
dc.contributor.author | Otegui, María Elena | |
dc.date.accessioned | 2022-06-13T11:05:47Z | |
dc.date.available | 2022-06-13T11:05:47Z | |
dc.date.issued | 2022-03 | |
dc.identifier.issn | 0022-0957 | |
dc.identifier.issn | 1460-2431 (online) | |
dc.identifier.other | https://doi.org/10.1093/jxb/erab503 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12123/12080 | |
dc.identifier.uri | https://academic.oup.com/jxb/article-abstract/73/5/1301/6481165 | |
dc.description.abstract | The light attenuation process within a plant canopy defines energy capture and vertical distribution of light and nitrogen (N). The vertical light distribution can be quantitatively described with the extinction coefficient (k), which associates the fraction of intercepted photosynthetically active radiation (fPARi) with the leaf area index (LAI). Lower values of k correspond to upright leaves and homogeneous vertical light distribution, increasing radiation use efficiency (RUE). Yield gains in maize (Zea mays L.) were accompanied by increases in optimum plant density and leaf erectness. Thus, the yield-driven breeding programs and management changes, such as reduced row spacing, selected a more erect leaf habit under different maize production systems (e.g., China and the USA). In this study, data from Argentina revealed that k decreased at a rate of 1.1% year–1 since 1989, regardless of plant density and in agreement with Chinese reports (1.0% year–1 since 1981). A reliable assessment of changes in k over time is critical for predicting (i) modifications in resource use efficiency (e.g. radiation, water, and N), improving estimations derived from crop simulation models; (ii) differences in productivity caused by management practices; and (iii) limitations to further exploit this trait with breeding. | eng |
dc.format | application/pdf | es_AR |
dc.language.iso | eng | es_AR |
dc.publisher | Oxford University Press | es_AR |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_AR |
dc.source | Journal of Experimental Botany 73 (5) : 1301-1311. (March 2022) | es_AR |
dc.subject | Maíz | es_AR |
dc.subject | Maize | eng |
dc.subject | Mejora | es_AR |
dc.subject | Breeding | eng |
dc.subject | Nitrógeno | es_AR |
dc.subject | Nitrogen | eng |
dc.subject | Fotosíntesis | es_AR |
dc.subject | Photosynthesis | eng |
dc.subject | Radiación | es_AR |
dc.subject | Radiation | eng |
dc.subject | Rendimiento de Cultivos | es_AR |
dc.subject | Crop Yield | eng |
dc.subject.other | Canopy Design | eng |
dc.subject.other | Light Extinction Coefficient | eng |
dc.subject.other | Light Interception | eng |
dc.title | Breeding effects on canopy light attenuation in maize: a retrospective and prospective analysis | es_AR |
dc.type | info:ar-repo/semantics/artículo | es_AR |
dc.type | info:eu-repo/semantics/article | es_AR |
dc.type | info:eu-repo/semantics/publishedVersion | es_AR |
dc.description.origen | EEA Pergamino | es_AR |
dc.description.fil | Fil: Lacasa, Josefina. Kansas State University. Throckmorton Plant Science Center. Department of Agronomy; Estados Unidos | es_AR |
dc.description.fil | Fil: Lacasa, Josefina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina | es_AR |
dc.description.fil | Fil: Ciampitti, Ignacio. Kansas State University. Throckmorton Plant Science Center. Department of Agronomy; Estados Unidos | es_AR |
dc.description.fil | Fil: Amas, Juan I. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Buenos Aires Norte. Estación Experimental Agropecuaria Pergamino; Argentina | es_AR |
dc.description.fil | Fil: Amas, Juan I. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina | es_AR |
dc.description.fil | Fil: Curín, Facundo. Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CIT-NOBA-CONICET); Argentina | es_AR |
dc.description.fil | Fil: Luque, Sergio F. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Cátedra de Cereales y Oleaginosas; Argentina | es_AR |
dc.description.fil | Fil: Otegui, María E. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina | es_AR |
dc.description.fil | Fil: Otegui, María E. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina | es_AR |
dc.description.fil | Fil: Otegui, María Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Buenos Aires Norte. Estación Experimental Agropecuaria Pergamino; Argentina | es_AR |
dc.subtype | cientifico |
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