Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces
Poster y resumen
| Main Authors: | , , , , , , , , |
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| Format: | Conferencia |
| Language: | Inglés |
| Published: |
Sociedad Argentina de Fisiología Vegetal
2025
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/21554 |
| _version_ | 1855486777305858048 |
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| author | Freilij, Damián Defacio, Raquel Alicia Heck, Mónica Isabel Fariza, Silvina Ines De Lucia, Adrían Darío Ferreyra, Mariana Jimena Paniego, Norma Beatriz Dominguez, Pia Guadalupe Lia, Veronica Viviana |
| author_browse | De Lucia, Adrían Darío Defacio, Raquel Alicia Dominguez, Pia Guadalupe Fariza, Silvina Ines Ferreyra, Mariana Jimena Freilij, Damián Heck, Mónica Isabel Lia, Veronica Viviana Paniego, Norma Beatriz |
| author_facet | Freilij, Damián Defacio, Raquel Alicia Heck, Mónica Isabel Fariza, Silvina Ines De Lucia, Adrían Darío Ferreyra, Mariana Jimena Paniego, Norma Beatriz Dominguez, Pia Guadalupe Lia, Veronica Viviana |
| author_sort | Freilij, Damián |
| collection | INTA Digital |
| description | Poster y resumen |
| format | Conferencia |
| id | INTA21554 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Sociedad Argentina de Fisiología Vegetal |
| publisherStr | Sociedad Argentina de Fisiología Vegetal |
| record_format | dspace |
| spelling | INTA215542025-03-06T13:27:50Z Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces Freilij, Damián Defacio, Raquel Alicia Heck, Mónica Isabel Fariza, Silvina Ines De Lucia, Adrían Darío Ferreyra, Mariana Jimena Paniego, Norma Beatriz Dominguez, Pia Guadalupe Lia, Veronica Viviana Maíz Fenotipos Genética de Poblaciones Maize Phenotypes Population Genetics Argentina Fitness Landrace Local Adaptation Reciprocal Transplant Poster y resumen The northern region of Argentina is home to more than 60 native maize landraces, with two main genetic groups of high phenotypic variability: the high-altitude Andean landraces, present in northwestern Argentina (NWA), and the floury landraces of the northeast (NEA). This work evaluated 9 accessions from each region by means of reciprocal transplant gardens (Maimará, Jujuy & Cerro Azul, Misiones) in order to demonstrate their local adaptation. The variability of 14 agro-morphological and 6 phenological and yield characters was studied using general linear mixed models. NEA landraces showed higher mean phenotypic values, while the NWA ones showed the highest variation in both environments, with a negative correlation between collection altitude and most of the traits. Morphological structuring assessed by a discriminant analysis of principal components (DAPC) revealed the existence of groups unique to each region and a high degree of admixture, with each accession consisting of more than one of the inferred groups. The Andean NWA group was the most consistently recovered in cluster analyses, while NEA maize was divided into two groups not concordant with prior divisions. The search for selective signals used PST - FST comparisons, representing morphological and molecular neutral divergence, respectively. Directional selection signals were detected both within and between regions at most traits, being strongest at the region level and varying in magnitude between gardens. Moreover, fitness values in the NEA garden, measured as the number of plants with good seed quality per plot, showed maladaptation and low yields of NWA maize outside its native range. Taken together, our analyses suggest that several traits mediate local adaptation in maize landraces from northern Argentina. From a broader perspective, the extensive variability found within regions highlights the need to consider this source of variation in the design of in situ and ex situ conservation programs. EEA Pergamino Fil: Freilij, Damián. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Defacio, Raquel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Recursos Genéticos; Argentina Fil: Heck, Mónica Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; Argentina Fil: Fariza, Silvina I. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; Argentina Fil: De Lucia, Adrián D. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Cerro Azul; Argentina Fil: Ferreyra, Mariana Jimena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Paniego, Norma Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Domínguez, Pía Guadalupe. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lía, Verónica Viviana. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Agrobiotecnología y Biología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lia, Verónica Viviana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina 2025-03-06T12:04:56Z 2025-03-06T12:04:56Z 2023-10 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21554 eng 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) application/pdf Sociedad Argentina de Fisiología Vegetal RAFV Conference 2023 XXXIV Argentinian Meeting of Plant Physiology. (Reunión de la Sociedad Argentina de Fisiología Vegetal) September 24 – 27, Rosario, Santa Fe, Argentina |
| spellingShingle | Maíz Fenotipos Genética de Poblaciones Maize Phenotypes Population Genetics Argentina Fitness Landrace Local Adaptation Reciprocal Transplant Freilij, Damián Defacio, Raquel Alicia Heck, Mónica Isabel Fariza, Silvina Ines De Lucia, Adrían Darío Ferreyra, Mariana Jimena Paniego, Norma Beatriz Dominguez, Pia Guadalupe Lia, Veronica Viviana Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title | Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title_full | Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title_fullStr | Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title_full_unstemmed | Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title_short | Morphological diversity, selective signals and evidence of local adaptation in Argentinean maize landraces |
| title_sort | morphological diversity selective signals and evidence of local adaptation in argentinean maize landraces |
| topic | Maíz Fenotipos Genética de Poblaciones Maize Phenotypes Population Genetics Argentina Fitness Landrace Local Adaptation Reciprocal Transplant |
| url | http://hdl.handle.net/20.500.12123/21554 |
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