Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply

Autores
Mayer, Luis Ignacio; Rossini, Maria de Los Angeles; Maddonni, Gustavo Angel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
High intra-specific competition pressure, which is common at most maize (Zea mays L.) cropping conditions, promotes inter-plant variation and the appearance of extreme plant hierarchies with different ability to capture scarce resources (i.e., dominant and dominated plants) within a stand. The objectives of the current work were to analyze (i) inter-plant variation of grain yield per plant (GYP), GYP components (KNP: kernel number per plant; KW: kernel weight), and kernel composition, together with those of their physiological determinants, i.e., plant growth (PG) rate around silking (PGRS), PGRS per kernel (PGRSKNP-1) and PG during the effective grain-filling period per kernel (PGGFKNP-1), under contrasting N supply and (ii) the contribution of dominant and dominated plants to changes in inter-plant variation and mean values of the studied traits. For these purposes two maize hybrids previously characterized by their contrasting inter-plant variation under N stress (low: AX820 and high: AX877) were cultivated at high stand densities (9 and 12plm-2) at two N supplies (N0: control and N200: 200kgNha-1) without water restrictions. For AX820, PGRS data set at both N levels explored a similar range (1-7.4 and 1.2-7.4gpl-1d-1 for N0 and N200, respectively) with a positive skewness in N0, and an almost normal distribution of data in N200. In contrast, for AX877, inter-plant variation of PGRS exhibited a normal distribution in both N levels, and N fertilization only produced a displacement of data to higher PGRS values (0-4.3 and 0.7-5.7gpl-1d-1 for N0 and N200, respectively). The effect of inter-plant variation of PGRS on the coefficient of variation (CV) of KNP was of a greater magnitude in AX877 than in AX820 due to the more linear KNP response to PGRS of the former. For both hybrids, mean values of KW increased and the CVs decreased in response to high N supply. Differences among plants and N levels in KW were related to the duration of the effective grain-filling period. Inter-plant variation of protein and starch concentrations was higher in N0 than in N200, but that of oil concentration was not affected by N supply. The analysis of plant hierarchies resulted useful to understand changes in mean values and frequency distributions of several agronomic traits. © 2011 Elsevier B.V.
Fil: Mayer, Luis Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Rossini, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Maddonni, Gustavo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Materia
Inter-Plant Variation
Kernel Composition
Kernel Number
Kernel Weight
Maize
Nitrogen
Zea Mays
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/60920

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network_name_str CONICET Digital (CONICET)
spelling Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supplyMayer, Luis IgnacioRossini, Maria de Los AngelesMaddonni, Gustavo AngelInter-Plant VariationKernel CompositionKernel NumberKernel WeightMaizeNitrogenZea Mayshttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4High intra-specific competition pressure, which is common at most maize (Zea mays L.) cropping conditions, promotes inter-plant variation and the appearance of extreme plant hierarchies with different ability to capture scarce resources (i.e., dominant and dominated plants) within a stand. The objectives of the current work were to analyze (i) inter-plant variation of grain yield per plant (GYP), GYP components (KNP: kernel number per plant; KW: kernel weight), and kernel composition, together with those of their physiological determinants, i.e., plant growth (PG) rate around silking (PGRS), PGRS per kernel (PGRSKNP-1) and PG during the effective grain-filling period per kernel (PGGFKNP-1), under contrasting N supply and (ii) the contribution of dominant and dominated plants to changes in inter-plant variation and mean values of the studied traits. For these purposes two maize hybrids previously characterized by their contrasting inter-plant variation under N stress (low: AX820 and high: AX877) were cultivated at high stand densities (9 and 12plm-2) at two N supplies (N0: control and N200: 200kgNha-1) without water restrictions. For AX820, PGRS data set at both N levels explored a similar range (1-7.4 and 1.2-7.4gpl-1d-1 for N0 and N200, respectively) with a positive skewness in N0, and an almost normal distribution of data in N200. In contrast, for AX877, inter-plant variation of PGRS exhibited a normal distribution in both N levels, and N fertilization only produced a displacement of data to higher PGRS values (0-4.3 and 0.7-5.7gpl-1d-1 for N0 and N200, respectively). The effect of inter-plant variation of PGRS on the coefficient of variation (CV) of KNP was of a greater magnitude in AX877 than in AX820 due to the more linear KNP response to PGRS of the former. For both hybrids, mean values of KW increased and the CVs decreased in response to high N supply. Differences among plants and N levels in KW were related to the duration of the effective grain-filling period. Inter-plant variation of protein and starch concentrations was higher in N0 than in N200, but that of oil concentration was not affected by N supply. The analysis of plant hierarchies resulted useful to understand changes in mean values and frequency distributions of several agronomic traits. © 2011 Elsevier B.V.Fil: Mayer, Luis Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Rossini, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Maddonni, Gustavo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaElsevier Science2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/60920Mayer, Luis Ignacio; Rossini, Maria de Los Angeles; Maddonni, Gustavo Angel; Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply; Elsevier Science; Field Crops Research; 125; 1-2012; 98-1080378-4290CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.fcr.2011.09.004info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378429011003182info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:14Zoai:ri.conicet.gov.ar:11336/60920instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:59:14.715CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
title Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
spellingShingle Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
Mayer, Luis Ignacio
Inter-Plant Variation
Kernel Composition
Kernel Number
Kernel Weight
Maize
Nitrogen
Zea Mays
title_short Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
title_full Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
title_fullStr Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
title_full_unstemmed Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
title_sort Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply
dc.creator.none.fl_str_mv Mayer, Luis Ignacio
Rossini, Maria de Los Angeles
Maddonni, Gustavo Angel
author Mayer, Luis Ignacio
author_facet Mayer, Luis Ignacio
Rossini, Maria de Los Angeles
Maddonni, Gustavo Angel
author_role author
author2 Rossini, Maria de Los Angeles
Maddonni, Gustavo Angel
author2_role author
author
dc.subject.none.fl_str_mv Inter-Plant Variation
Kernel Composition
Kernel Number
Kernel Weight
Maize
Nitrogen
Zea Mays
topic Inter-Plant Variation
Kernel Composition
Kernel Number
Kernel Weight
Maize
Nitrogen
Zea Mays
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv High intra-specific competition pressure, which is common at most maize (Zea mays L.) cropping conditions, promotes inter-plant variation and the appearance of extreme plant hierarchies with different ability to capture scarce resources (i.e., dominant and dominated plants) within a stand. The objectives of the current work were to analyze (i) inter-plant variation of grain yield per plant (GYP), GYP components (KNP: kernel number per plant; KW: kernel weight), and kernel composition, together with those of their physiological determinants, i.e., plant growth (PG) rate around silking (PGRS), PGRS per kernel (PGRSKNP-1) and PG during the effective grain-filling period per kernel (PGGFKNP-1), under contrasting N supply and (ii) the contribution of dominant and dominated plants to changes in inter-plant variation and mean values of the studied traits. For these purposes two maize hybrids previously characterized by their contrasting inter-plant variation under N stress (low: AX820 and high: AX877) were cultivated at high stand densities (9 and 12plm-2) at two N supplies (N0: control and N200: 200kgNha-1) without water restrictions. For AX820, PGRS data set at both N levels explored a similar range (1-7.4 and 1.2-7.4gpl-1d-1 for N0 and N200, respectively) with a positive skewness in N0, and an almost normal distribution of data in N200. In contrast, for AX877, inter-plant variation of PGRS exhibited a normal distribution in both N levels, and N fertilization only produced a displacement of data to higher PGRS values (0-4.3 and 0.7-5.7gpl-1d-1 for N0 and N200, respectively). The effect of inter-plant variation of PGRS on the coefficient of variation (CV) of KNP was of a greater magnitude in AX877 than in AX820 due to the more linear KNP response to PGRS of the former. For both hybrids, mean values of KW increased and the CVs decreased in response to high N supply. Differences among plants and N levels in KW were related to the duration of the effective grain-filling period. Inter-plant variation of protein and starch concentrations was higher in N0 than in N200, but that of oil concentration was not affected by N supply. The analysis of plant hierarchies resulted useful to understand changes in mean values and frequency distributions of several agronomic traits. © 2011 Elsevier B.V.
Fil: Mayer, Luis Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Rossini, Maria de Los Angeles. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Maddonni, Gustavo Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
description High intra-specific competition pressure, which is common at most maize (Zea mays L.) cropping conditions, promotes inter-plant variation and the appearance of extreme plant hierarchies with different ability to capture scarce resources (i.e., dominant and dominated plants) within a stand. The objectives of the current work were to analyze (i) inter-plant variation of grain yield per plant (GYP), GYP components (KNP: kernel number per plant; KW: kernel weight), and kernel composition, together with those of their physiological determinants, i.e., plant growth (PG) rate around silking (PGRS), PGRS per kernel (PGRSKNP-1) and PG during the effective grain-filling period per kernel (PGGFKNP-1), under contrasting N supply and (ii) the contribution of dominant and dominated plants to changes in inter-plant variation and mean values of the studied traits. For these purposes two maize hybrids previously characterized by their contrasting inter-plant variation under N stress (low: AX820 and high: AX877) were cultivated at high stand densities (9 and 12plm-2) at two N supplies (N0: control and N200: 200kgNha-1) without water restrictions. For AX820, PGRS data set at both N levels explored a similar range (1-7.4 and 1.2-7.4gpl-1d-1 for N0 and N200, respectively) with a positive skewness in N0, and an almost normal distribution of data in N200. In contrast, for AX877, inter-plant variation of PGRS exhibited a normal distribution in both N levels, and N fertilization only produced a displacement of data to higher PGRS values (0-4.3 and 0.7-5.7gpl-1d-1 for N0 and N200, respectively). The effect of inter-plant variation of PGRS on the coefficient of variation (CV) of KNP was of a greater magnitude in AX877 than in AX820 due to the more linear KNP response to PGRS of the former. For both hybrids, mean values of KW increased and the CVs decreased in response to high N supply. Differences among plants and N levels in KW were related to the duration of the effective grain-filling period. Inter-plant variation of protein and starch concentrations was higher in N0 than in N200, but that of oil concentration was not affected by N supply. The analysis of plant hierarchies resulted useful to understand changes in mean values and frequency distributions of several agronomic traits. © 2011 Elsevier B.V.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/60920
Mayer, Luis Ignacio; Rossini, Maria de Los Angeles; Maddonni, Gustavo Angel; Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply; Elsevier Science; Field Crops Research; 125; 1-2012; 98-108
0378-4290
CONICET Digital
CONICET
url http://hdl.handle.net/11336/60920
identifier_str_mv Mayer, Luis Ignacio; Rossini, Maria de Los Angeles; Maddonni, Gustavo Angel; Inter-plant variation of grain yield components and kernel composition of maize crops grown under contrasting nitrogen supply; Elsevier Science; Field Crops Research; 125; 1-2012; 98-108
0378-4290
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fcr.2011.09.004
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0378429011003182
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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