Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes

Autores
Rivas, Juan Gabriel; Gutierrez, Ángela Verónica; Defacio, Raquel Alicia; Schimpf, Jorge; Vicario, Ana L.; Hopp, Horacio Esteban; Paniego, Norma Beatriz; Lia, Veronica Viviana
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Maize (Zea mays ssp. mays) is a major cereal crop worldwide and is traditionally or commercially cultivated almost all over the Americas. The northwestern region of Argentina (NWA) constitutes one of the main diversity hotspots of the Southern Andes, with contrasting landscapes and a large number of landraces. Despite the extensive collections performed by the “Banco Activo de Germoplasma INTA Pergamino, Argentina” (BAP), most of them have not been characterized yet. Here we report the morphological and molecular evaluation of 30 accessions collected from NWA, along an altitudinal gradient between 1120 and 2950 meters above sea level (masl). Assessment of morphological variation in a common garden allowed the discrimination of two groups, which differed mainly in endosperm type and overall plant size. Although the groups retrieved by the molecular analyses were not consistent with morphological clusters, they showed a clear pattern of altitudinal structuring. Affinities among accessions were not in accordance with racial assignments. Overall, our results revealed that there are two maize gene pools co-existing in NWA, probably resulting from various waves of maize introduction in pre-Columbian times as well as from the adoption of modern varieties by local farmers. In conclusion, the NWA maize landraces preserved at the BAP possess high morphological and molecular variability. Our results highlight their potential as a source of diversity for increasing the genetic basis of breeding programs and provide useful information to guide future sampling and conservation efforts.
EEA Pergamino
Fil: Rivas, Juan Gabriel. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Gutiérrez, Ángela V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Schimpf, Jorge. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina
Fil: Vicario, Ana L. Instituto Nacional de Semillas (INASE). Laboratorio de Marcadores Moleculares y Fitopatología; Argentina
Fil: Hopp, H. Esteban. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Hopp, H. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Lia, Veronica V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Lia, Veronica V. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fuente
BioRxiv (July 2022)
Materia
Maíz
Genética
Variación Genética
Mejora Genética
Maize
Genetics
Genetic Variation
Genetic Gain
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/12901
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spelling Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern AndesRivas, Juan GabrielGutierrez, Ángela VerónicaDefacio, Raquel AliciaSchimpf, JorgeVicario, Ana L.Hopp, Horacio EstebanPaniego, Norma BeatrizLia, Veronica VivianaMaízGenéticaVariación GenéticaMejora GenéticaMaizeGeneticsGenetic VariationGenetic GainMaize (Zea mays ssp. mays) is a major cereal crop worldwide and is traditionally or commercially cultivated almost all over the Americas. The northwestern region of Argentina (NWA) constitutes one of the main diversity hotspots of the Southern Andes, with contrasting landscapes and a large number of landraces. Despite the extensive collections performed by the “Banco Activo de Germoplasma INTA Pergamino, Argentina” (BAP), most of them have not been characterized yet. Here we report the morphological and molecular evaluation of 30 accessions collected from NWA, along an altitudinal gradient between 1120 and 2950 meters above sea level (masl). Assessment of morphological variation in a common garden allowed the discrimination of two groups, which differed mainly in endosperm type and overall plant size. Although the groups retrieved by the molecular analyses were not consistent with morphological clusters, they showed a clear pattern of altitudinal structuring. Affinities among accessions were not in accordance with racial assignments. Overall, our results revealed that there are two maize gene pools co-existing in NWA, probably resulting from various waves of maize introduction in pre-Columbian times as well as from the adoption of modern varieties by local farmers. In conclusion, the NWA maize landraces preserved at the BAP possess high morphological and molecular variability. Our results highlight their potential as a source of diversity for increasing the genetic basis of breeding programs and provide useful information to guide future sampling and conservation efforts.EEA PergaminoFil: Rivas, Juan Gabriel. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); ArgentinaFil: Gutiérrez, Ángela V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); ArgentinaFil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; ArgentinaFil: Schimpf, Jorge. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; ArgentinaFil: Vicario, Ana L. Instituto Nacional de Semillas (INASE). Laboratorio de Marcadores Moleculares y Fitopatología; ArgentinaFil: Hopp, H. Esteban. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); ArgentinaFil: Hopp, H. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); ArgentinaFil: Lia, Veronica V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); ArgentinaFil: Lia, Veronica V. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaBioRxiv2022-09-16T12:02:31Z2022-09-16T12:02:31Z2022-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/12901https://www.biorxiv.org/content/10.1101/2022.07.01.498464v1https://doi.org/10.1101/2022.07.01.498464BioRxiv (July 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:45:41Zoai:localhost:20.500.12123/12901instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:45:42.06INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
title Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
spellingShingle Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
Rivas, Juan Gabriel
Maíz
Genética
Variación Genética
Mejora Genética
Maize
Genetics
Genetic Variation
Genetic Gain
title_short Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
title_full Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
title_fullStr Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
title_full_unstemmed Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
title_sort Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
dc.creator.none.fl_str_mv Rivas, Juan Gabriel
Gutierrez, Ángela Verónica
Defacio, Raquel Alicia
Schimpf, Jorge
Vicario, Ana L.
Hopp, Horacio Esteban
Paniego, Norma Beatriz
Lia, Veronica Viviana
author Rivas, Juan Gabriel
author_facet Rivas, Juan Gabriel
Gutierrez, Ángela Verónica
Defacio, Raquel Alicia
Schimpf, Jorge
Vicario, Ana L.
Hopp, Horacio Esteban
Paniego, Norma Beatriz
Lia, Veronica Viviana
author_role author
author2 Gutierrez, Ángela Verónica
Defacio, Raquel Alicia
Schimpf, Jorge
Vicario, Ana L.
Hopp, Horacio Esteban
Paniego, Norma Beatriz
Lia, Veronica Viviana
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Maíz
Genética
Variación Genética
Mejora Genética
Maize
Genetics
Genetic Variation
Genetic Gain
topic Maíz
Genética
Variación Genética
Mejora Genética
Maize
Genetics
Genetic Variation
Genetic Gain
dc.description.none.fl_txt_mv Maize (Zea mays ssp. mays) is a major cereal crop worldwide and is traditionally or commercially cultivated almost all over the Americas. The northwestern region of Argentina (NWA) constitutes one of the main diversity hotspots of the Southern Andes, with contrasting landscapes and a large number of landraces. Despite the extensive collections performed by the “Banco Activo de Germoplasma INTA Pergamino, Argentina” (BAP), most of them have not been characterized yet. Here we report the morphological and molecular evaluation of 30 accessions collected from NWA, along an altitudinal gradient between 1120 and 2950 meters above sea level (masl). Assessment of morphological variation in a common garden allowed the discrimination of two groups, which differed mainly in endosperm type and overall plant size. Although the groups retrieved by the molecular analyses were not consistent with morphological clusters, they showed a clear pattern of altitudinal structuring. Affinities among accessions were not in accordance with racial assignments. Overall, our results revealed that there are two maize gene pools co-existing in NWA, probably resulting from various waves of maize introduction in pre-Columbian times as well as from the adoption of modern varieties by local farmers. In conclusion, the NWA maize landraces preserved at the BAP possess high morphological and molecular variability. Our results highlight their potential as a source of diversity for increasing the genetic basis of breeding programs and provide useful information to guide future sampling and conservation efforts.
EEA Pergamino
Fil: Rivas, Juan Gabriel. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Gutiérrez, Ángela V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina
Fil: Schimpf, Jorge. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias; Argentina
Fil: Vicario, Ana L. Instituto Nacional de Semillas (INASE). Laboratorio de Marcadores Moleculares y Fitopatología; Argentina
Fil: Hopp, H. Esteban. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Hopp, H. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Lia, Veronica V. Instituto Nacional de Tecnología Agropecuaria-Consejo Nacional de Investigaciones Científicas y Técnicas (INTA-CONICET). Instituto de Agrobiotecnología y Biología Molecular (IABIMO); Argentina
Fil: Lia, Veronica V. Esteban. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
description Maize (Zea mays ssp. mays) is a major cereal crop worldwide and is traditionally or commercially cultivated almost all over the Americas. The northwestern region of Argentina (NWA) constitutes one of the main diversity hotspots of the Southern Andes, with contrasting landscapes and a large number of landraces. Despite the extensive collections performed by the “Banco Activo de Germoplasma INTA Pergamino, Argentina” (BAP), most of them have not been characterized yet. Here we report the morphological and molecular evaluation of 30 accessions collected from NWA, along an altitudinal gradient between 1120 and 2950 meters above sea level (masl). Assessment of morphological variation in a common garden allowed the discrimination of two groups, which differed mainly in endosperm type and overall plant size. Although the groups retrieved by the molecular analyses were not consistent with morphological clusters, they showed a clear pattern of altitudinal structuring. Affinities among accessions were not in accordance with racial assignments. Overall, our results revealed that there are two maize gene pools co-existing in NWA, probably resulting from various waves of maize introduction in pre-Columbian times as well as from the adoption of modern varieties by local farmers. In conclusion, the NWA maize landraces preserved at the BAP possess high morphological and molecular variability. Our results highlight their potential as a source of diversity for increasing the genetic basis of breeding programs and provide useful information to guide future sampling and conservation efforts.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-16T12:02:31Z
2022-09-16T12:02:31Z
2022-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/12901
https://www.biorxiv.org/content/10.1101/2022.07.01.498464v1
https://doi.org/10.1101/2022.07.01.498464
url http://hdl.handle.net/20.500.12123/12901
https://www.biorxiv.org/content/10.1101/2022.07.01.498464v1
https://doi.org/10.1101/2022.07.01.498464
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv BioRxiv
publisher.none.fl_str_mv BioRxiv
dc.source.none.fl_str_mv BioRxiv (July 2022)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
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instname_str Instituto Nacional de Tecnología Agropecuaria
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