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Kernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate [ver mas...]
dc.contributor.authorCerrudo, Diego
dc.contributor.authorHernández, Mariano
dc.contributor.authorTollenaar, Matthijs
dc.contributor.authorVega, Claudia Rosa Cecilia
dc.contributor.authorEcharte, Laura
dc.date.accessioned2020-06-04T11:14:05Z
dc.date.available2020-06-04T11:14:05Z
dc.date.issued2020-02-07
dc.identifier.issn1435-0653
dc.identifier.otherhttps://doi.org/10.1002/csc2.20077
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7359
dc.identifier.urihttps://acsess.onlinelibrary.wiley.com/doi/abs/10.1002/csc2.20077
dc.description.abstractKernel set response to plant density was examined in terms of physiological processes underlying kernel set in temperate (Te), tropical (Tr), and temperate × tropical (TeTr) maize (Zea mays L.) hybrids. Four field experiments were performed in a subtropical environment, and treatments combined two new and popular commercial hybrids of each group of germplasm background with five plant densities (2–30 plants m−2). Determinations included plant growth rate (PGRS) and topmost ear growth rate (EGRS) during the period bracketing silking, grain yield, and its components. In all hybrids, kernel number was the main grain yield component contributing to grain yield variations across densities. When grown in a high‐yielding subtropical environment, all hybrids exhibited increased kernel number per area with increasing plant density from 5 to 11 plants m−2. There was not a clear trend among groups of germplasm background in the number of kernel set at each plant density, but distinctive physiological processes underlying kernel number per plant (KNP) were evident between Te and Tr hybrids. Across plant densities, the KNP/PGRS ratio was larger and PGRS was lower in Te than in Tr hybrids. Larger KNP/PGRS in Te than in Tr hybrids were associated with greater prolificacy al low plant density and larger EGRS. In TeTr hybrids instead, there was not a common physiological process underlying kernel set, since genotypes representing this group shared traits similar to those of Te and Tr genotypes.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherCrop Science Society of Americaes_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceCrop Science 60 (1) : 381-390 (2020)es_AR
dc.subjectMaízes_AR
dc.subjectMaizeeng
dc.subjectHíbridoses_AR
dc.subjectHybridseng
dc.subjectRendimientoes_AR
dc.subjectYieldseng
dc.subjectGranoses_AR
dc.subjectGraineng
dc.subjectGermoplasmaes_AR
dc.subjectGermplasmeng
dc.titleKernel number response to plant density in tropical, temperate, and tropical × temperate maize hybridses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Balcarcees_AR
dc.description.filFil: Cerrudo, Diego. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.es_AR
dc.description.filFil: Hernández, Mariano. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.es_AR
dc.description.filFil: Tollenaar, Matthijs. The Climate Corp; Estados Unidoses_AR
dc.description.filFil: Vega Claudia Rosa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina.es_AR
dc.description.filFil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA) Estación Experimental Agropecuaria Balcarce; Argentina Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.es_AR
dc.subtypecientifico


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