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Abstract
In the last years globally, daily night-time low temperatures have increased more than twice compared with maximum temperatures. There is little evidence about maize growth and yield responses to high night temperature (HNT) under field conditions. In this study, we aimed to (i) evaluate the effect of HNT during post-flowering on kernel number (KN), crop growth rate expressed in chronological days and thermal units (CGRD and CGRTU, respectively), [ver mas...]
dc.contributor.authorKettler, Belén Araceli
dc.contributor.authorCarrera, Constanza Soledad
dc.contributor.authorNalli Sonzogni, Federico David
dc.contributor.authorTrachsel, Samuel
dc.contributor.authorAndrade, Fernando Hector
dc.contributor.authorNeiff, Nicolás
dc.date.accessioned2022-03-21T10:40:29Z
dc.date.available2022-03-21T10:40:29Z
dc.date.issued2022-03-15
dc.identifier.issn0931-2250
dc.identifier.issn1439-037X (online)
dc.identifier.otherhttps://doi.org/10.1111/jac.12589
dc.identifier.urihttp://hdl.handle.net/20.500.12123/11446
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1111/jac.12589
dc.description.abstractIn the last years globally, daily night-time low temperatures have increased more than twice compared with maximum temperatures. There is little evidence about maize growth and yield responses to high night temperature (HNT) under field conditions. In this study, we aimed to (i) evaluate the effect of HNT during post-flowering on kernel number (KN), crop growth rate expressed in chronological days and thermal units (CGRD and CGRTU, respectively), radiation use efficiency (RUE), night respiration (Rn), net photosynthesis (Amax), chlorophyll fluorescence and cell membrane stability (CMS), and (ii) identify associations among the measured physiological traits. Two hybrids (Te, temperate; and St, subtropical) were exposed to two thermal conditions from R1 + 2d to R1 + 16d: (i) HNT from 1900 to 0700 h, and (ii) ambient night temperature (ANT). The HNT resulted in reductions in KN (8%), CGRD (11%), and CGRTU (19%), with non-significant changes in kernel weight and grain yield. Reductions in KN were better explained by drops in CGRTU than in CGRD. Under HNT, Amax significantly decreased (p < 0.05; 17%, among experiments and hybrids) with insignificant changes in CMS and chlorophyll fluorescence. HNT caused a larger effect on Rn in Te (+40%) than in St. We found a strong negative relationship between Rn and Amax, indicating that high Rn might exhibit an indirect effect on Amax, altering carbon balance and growth.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherWileyes_AR
dc.relationinfo:eu-repograntAgreement/INTA/2019-PD-E3-I060-001/2019-PD-E3-I060-001/AR./Adaptación de los cultivos al cambio climático: Bases ecofisiológicas para el manejo y la mejora genéticaes_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceJournal of Agronomy and Crop Science (First published: 15 March 2022)es_AR
dc.subjectGlobal Warmingeng
dc.subjectMaizeeng
dc.subjectCalentamiento Globales_AR
dc.subjectMaíz
dc.subjectTemperatura
dc.subjectTemperatureeng
dc.subject.otherCarbon Balanceeng
dc.subject.otherRadiation Use Efficiencyeng
dc.titleHigh night temperature during maize post-flowering increases night respiration and reduces photosynthesis, growth and kernel numberes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenInstituto de Fisiología y Recursos Genéticos Vegetaleses_AR
dc.description.filFil: Kettler, Belén Araceli. Universidad Nacional del Nordeste. Centro de Ecofisiología Vegetal. Facultad de Ciencias Agrarias; Argentinaes_AR
dc.description.filFil: Kettler, Belén Araceli. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Carrera, Constanza Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentinaes_AR
dc.description.filFil: Carrera, Constanza Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Estudios Agropecuarios (UDEA). Argentinaes_AR
dc.description.filFil: Nalli Sonzogni, Federico David. Universidad Nacional del Nordeste. Centro de Ecofisiología Vegetal. Facultad de Ciencias Agrarias; Argentinaes_AR
dc.description.filFil: Nalli Sonzogni, Federico David. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Trachsel, Samuel. Corteva Agriscience. Carcares Sainte Croix; Franciaes_AR
dc.description.filFil: Andrade, Fernando Hector. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentinaes_AR
dc.description.filFil: Andrade, Fernando Hector. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Neiff, Nicolás. Universidad Nacional del Nordeste. Centro de Ecofisiología Vegetal. Facultad de Ciencias Agrarias; Argentinaes_AR
dc.subtypecientifico


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