Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs

Autores
Laserna, María Paula; Lopez, C. G.; Maddonni, Gustavo Angel
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Maize (Zea mays. L) traditional breeding presents limitations when selection is performed by adaptation to suboptimal conditions. One strategy to achieve greater efficiency in these environments is to include measurements of secondary traits related to the main grain yield component, i.e. kernel number per plant (KNP), which is associated to other three secondary traits: plant growth rate during the critical period (PGRcp) for kernel setting, biomass partitioning index to the ear during this period (PIcp) and the efficiency of the ear to set kernels or reproductive efficiency (RE). Phenotypic variations in these KNP related traits were evaluated considering: i) plant densities, and ii) simple and staked transgenic maize hybrids. The objective of this study was to identify the contribution of these secondary traits to KNP in six modern single-cross transgenic hybrids: the simple and staked transgenic versions of DK747 and DK190 (Bt: 747MG and 190MG; RR: 747RR and 190RR; and Bt-RR: 747MGRR and 190MGRR) cultivated at low and high plant densities. For this purpose, KNP and secondary traits were recorded at the individual plant level and data set was analyzed using multivariate analysis techniques. At low plant density, PGRcp was the critical trait for kernel setting in all hybrids but PIcp or RE also contributed to KNP of the DK747 group and the D190 group, respectively. At high plant density, a differential contribution of secondary traits to KNP was recorded among hybrids. For DK747MG and DK190MG, RE mainly determined KNP, but for the DK747RR and DK747MGRR higher PIcp had positive impact on KNP. These results highlight the importance of including secondary traits associated to KNP in breeding programs.
Fil: Laserna, María Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible - Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Lopez, C. G.. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud. - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud; Argentina
Fil: Maddonni, Gustavo Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina. 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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
Materia
MAIZE
SECONDARY TRAITS
KERNEL SETTING
PLANT DENSITY
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:11336/168238
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programsLaserna, María PaulaLopez, C. G.Maddonni, Gustavo AngelMAIZESECONDARY TRAITSKERNEL SETTINGPLANT DENSITYhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Maize (Zea mays. L) traditional breeding presents limitations when selection is performed by adaptation to suboptimal conditions. One strategy to achieve greater efficiency in these environments is to include measurements of secondary traits related to the main grain yield component, i.e. kernel number per plant (KNP), which is associated to other three secondary traits: plant growth rate during the critical period (PGRcp) for kernel setting, biomass partitioning index to the ear during this period (PIcp) and the efficiency of the ear to set kernels or reproductive efficiency (RE). Phenotypic variations in these KNP related traits were evaluated considering: i) plant densities, and ii) simple and staked transgenic maize hybrids. The objective of this study was to identify the contribution of these secondary traits to KNP in six modern single-cross transgenic hybrids: the simple and staked transgenic versions of DK747 and DK190 (Bt: 747MG and 190MG; RR: 747RR and 190RR; and Bt-RR: 747MGRR and 190MGRR) cultivated at low and high plant densities. For this purpose, KNP and secondary traits were recorded at the individual plant level and data set was analyzed using multivariate analysis techniques. At low plant density, PGRcp was the critical trait for kernel setting in all hybrids but PIcp or RE also contributed to KNP of the DK747 group and the D190 group, respectively. At high plant density, a differential contribution of secondary traits to KNP was recorded among hybrids. For DK747MG and DK190MG, RE mainly determined KNP, but for the DK747RR and DK747MGRR higher PIcp had positive impact on KNP. These results highlight the importance of including secondary traits associated to KNP in breeding programs.Fil: Laserna, María Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible - Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; ArgentinaFil: Lopez, C. G.. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud. - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud; ArgentinaFil: Maddonni, Gustavo Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina. 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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaMaydica-ist Sper Cerealicoltur2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/168238Laserna, María Paula; Lopez, C. G.; Maddonni, Gustavo Angel; Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs; Maydica-ist Sper Cerealicoltur; Maydica; 64; 2; 12-2019; 1-120025-61532279-8013CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals-crea.4science.it/index.php/maydica/article/view/1928info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T12:24:51Zoai:ri.conicet.gov.ar:11336/168238instacron: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:34982026-02-06 12:24:51.323CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
title Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
spellingShingle Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
Laserna, María Paula
MAIZE
SECONDARY TRAITS
KERNEL SETTING
PLANT DENSITY
title_short Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
title_full Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
title_fullStr Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
title_full_unstemmed Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
title_sort Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs
dc.creator.none.fl_str_mv Laserna, María Paula
Lopez, C. G.
Maddonni, Gustavo Angel
author Laserna, María Paula
author_facet Laserna, María Paula
Lopez, C. G.
Maddonni, Gustavo Angel
author_role author
author2 Lopez, C. G.
Maddonni, Gustavo Angel
author2_role author
author
dc.subject.none.fl_str_mv MAIZE
SECONDARY TRAITS
KERNEL SETTING
PLANT DENSITY
topic MAIZE
SECONDARY TRAITS
KERNEL SETTING
PLANT DENSITY
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Maize (Zea mays. L) traditional breeding presents limitations when selection is performed by adaptation to suboptimal conditions. One strategy to achieve greater efficiency in these environments is to include measurements of secondary traits related to the main grain yield component, i.e. kernel number per plant (KNP), which is associated to other three secondary traits: plant growth rate during the critical period (PGRcp) for kernel setting, biomass partitioning index to the ear during this period (PIcp) and the efficiency of the ear to set kernels or reproductive efficiency (RE). Phenotypic variations in these KNP related traits were evaluated considering: i) plant densities, and ii) simple and staked transgenic maize hybrids. The objective of this study was to identify the contribution of these secondary traits to KNP in six modern single-cross transgenic hybrids: the simple and staked transgenic versions of DK747 and DK190 (Bt: 747MG and 190MG; RR: 747RR and 190RR; and Bt-RR: 747MGRR and 190MGRR) cultivated at low and high plant densities. For this purpose, KNP and secondary traits were recorded at the individual plant level and data set was analyzed using multivariate analysis techniques. At low plant density, PGRcp was the critical trait for kernel setting in all hybrids but PIcp or RE also contributed to KNP of the DK747 group and the D190 group, respectively. At high plant density, a differential contribution of secondary traits to KNP was recorded among hybrids. For DK747MG and DK190MG, RE mainly determined KNP, but for the DK747RR and DK747MGRR higher PIcp had positive impact on KNP. These results highlight the importance of including secondary traits associated to KNP in breeding programs.
Fil: Laserna, María Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible - Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Lopez, C. G.. Universidad Nacional de Lomas de Zamora. Facultad de Ciencias Agrarias. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud. - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires. Instituto de Investigación en Producción Agropecuaria Ambiente y Salud; Argentina
Fil: Maddonni, Gustavo Angel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal; Argentina. 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. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina
description Maize (Zea mays. L) traditional breeding presents limitations when selection is performed by adaptation to suboptimal conditions. One strategy to achieve greater efficiency in these environments is to include measurements of secondary traits related to the main grain yield component, i.e. kernel number per plant (KNP), which is associated to other three secondary traits: plant growth rate during the critical period (PGRcp) for kernel setting, biomass partitioning index to the ear during this period (PIcp) and the efficiency of the ear to set kernels or reproductive efficiency (RE). Phenotypic variations in these KNP related traits were evaluated considering: i) plant densities, and ii) simple and staked transgenic maize hybrids. The objective of this study was to identify the contribution of these secondary traits to KNP in six modern single-cross transgenic hybrids: the simple and staked transgenic versions of DK747 and DK190 (Bt: 747MG and 190MG; RR: 747RR and 190RR; and Bt-RR: 747MGRR and 190MGRR) cultivated at low and high plant densities. For this purpose, KNP and secondary traits were recorded at the individual plant level and data set was analyzed using multivariate analysis techniques. At low plant density, PGRcp was the critical trait for kernel setting in all hybrids but PIcp or RE also contributed to KNP of the DK747 group and the D190 group, respectively. At high plant density, a differential contribution of secondary traits to KNP was recorded among hybrids. For DK747MG and DK190MG, RE mainly determined KNP, but for the DK747RR and DK747MGRR higher PIcp had positive impact on KNP. These results highlight the importance of including secondary traits associated to KNP in breeding programs.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
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/11336/168238
Laserna, María Paula; Lopez, C. G.; Maddonni, Gustavo Angel; Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs; Maydica-ist Sper Cerealicoltur; Maydica; 64; 2; 12-2019; 1-12
0025-6153
2279-8013
CONICET Digital
CONICET
url http://hdl.handle.net/11336/168238
identifier_str_mv Laserna, María Paula; Lopez, C. G.; Maddonni, Gustavo Angel; Secondary traits related to kernel setting in transgenic maize hybrids at low and high plant densities and their potential use in breeding programs; Maydica-ist Sper Cerealicoltur; Maydica; 64; 2; 12-2019; 1-12
0025-6153
2279-8013
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals-crea.4science.it/index.php/maydica/article/view/1928
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
dc.publisher.none.fl_str_mv Maydica-ist Sper Cerealicoltur
publisher.none.fl_str_mv Maydica-ist Sper Cerealicoltur
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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score 13.106097

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