Morphological and genetic diversity of maize landraces along an altitudinal gradient in the Southern Andes
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...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2022 |
| País: | Argentina |
| Institución: | Instituto Nacional de Tecnología Agropecuaria |
| Repositorio: | INTA Digital (INTA) |
| Idioma: | inglés |
| OAI Identifier: | oai:localhost:20.500.12123/12901 |
| Acceso en línea: | 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 |
| Access Level: | acceso abierto |
| Palabra clave: | Maíz Genética Variación Genética Mejora Genética Maize Genetics Genetic Variation Genetic Gain |
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| 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 |
| 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 |
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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 http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf |
| dc.publisher.none.fl_str_mv |
BioRxiv |
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BioRxiv |
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BioRxiv (July 2022) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
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Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) |
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INTA Digital (INTA) |
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INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
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tripaldi.nicolas@inta.gob.ar |
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1799197098468442112 |
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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)2024-05-15T12:25:26Zoai: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:l2024-05-15 12:25:27.037INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse |
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