Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional
In maize, genetic diversity and population structure assessment by using new sequencing technologies is crucial since inbreeding reduces not only the fitness, but also the production-associated traits. The present work aims to evaluate the genetic diversity and genetic structure of a panel of 191 in...
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| Format: | Conferencia |
| Language: | Español |
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Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires
2024
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| Online Access: | http://hdl.handle.net/20.500.12123/16790 |
| _version_ | 1855485835823022080 |
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| author | Perdomo, Santiago I. Baricalla, Agustín Ariel Iglesias, Juliana |
| author_browse | Baricalla, Agustín Ariel Iglesias, Juliana Perdomo, Santiago I. |
| author_facet | Perdomo, Santiago I. Baricalla, Agustín Ariel Iglesias, Juliana |
| author_sort | Perdomo, Santiago I. |
| collection | INTA Digital |
| description | In maize, genetic diversity and population structure assessment by using new sequencing technologies is crucial since inbreeding reduces not only the fitness, but also the production-associated traits. The present work aims to evaluate the genetic diversity and genetic structure of a panel of 191 inbred lines from the Maize Breeding Program at EEA INTA Pergamino with the widely-used Illumina MaizeSNP50 BeadChip. To that end, two different Bayesian methodologies were investigated: STRUCTURE and fastSTRUCTURE altogether with NJ and UPGMA clustering methods. t-SNE was used for data visualization. Clustering results were validated by comparison with pedigree and heterotic pattern information. Population structure analysis provided an estimated K=10 groups (subpopulations) constituted by genotypes derived from families of syn. hybrid Pioneer, syn. BS13P, syn. 34 from INTA Leales, from AX882(F2) and M11 (F2), lines derived from P465 among some other mixed groups. Fst values from the 10-subpopulations ranged from 0.43-0.75, with an overall Fst=0.6 indicating a medium to a high amount of genetic differentiation. Therefore, inbreds from each subpopulation can be crossed and tested for heterosis. Overall, these results showed substantial genetic variability that could be exploited to obtain new maize varieties to meet future challenges. Important information is also provided for future genome wide association studies and marker-assisted selection. |
| format | Conferencia |
| id | INTA16790 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Español |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires |
| publisherStr | Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires |
| record_format | dspace |
| spelling | INTA167902024-02-23T17:11:00Z Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional Perdomo, Santiago I. Baricalla, Agustín Ariel Iglesias, Juliana Maíz Mejoramiento Genético Variación genética Maize Genetic Improvement Genetic Variation Subpoblaciones In maize, genetic diversity and population structure assessment by using new sequencing technologies is crucial since inbreeding reduces not only the fitness, but also the production-associated traits. The present work aims to evaluate the genetic diversity and genetic structure of a panel of 191 inbred lines from the Maize Breeding Program at EEA INTA Pergamino with the widely-used Illumina MaizeSNP50 BeadChip. To that end, two different Bayesian methodologies were investigated: STRUCTURE and fastSTRUCTURE altogether with NJ and UPGMA clustering methods. t-SNE was used for data visualization. Clustering results were validated by comparison with pedigree and heterotic pattern information. Population structure analysis provided an estimated K=10 groups (subpopulations) constituted by genotypes derived from families of syn. hybrid Pioneer, syn. BS13P, syn. 34 from INTA Leales, from AX882(F2) and M11 (F2), lines derived from P465 among some other mixed groups. Fst values from the 10-subpopulations ranged from 0.43-0.75, with an overall Fst=0.6 indicating a medium to a high amount of genetic differentiation. Therefore, inbreds from each subpopulation can be crossed and tested for heterosis. Overall, these results showed substantial genetic variability that could be exploited to obtain new maize varieties to meet future challenges. Important information is also provided for future genome wide association studies and marker-assisted selection. EEA Pergamino Fil: Perdomo, S. I. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Escuela de Ciencias Agrarias, Naturales y Ambientales; Argentina Fil: Baricalla, A. A. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Escuela de Ciencias Agrarias, Naturales y Ambientales; Argentina Fil: Baricalla, A. A. Universidad Nacional del Noroeste de la Provincia de Buenos Aires - Universidad Nacional de San Antonio de Areco - Consejo Nacional de Investigaciones Científicas y Técnicas - (UNNOBA - UNSAdA - CONICET). Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CITNOBA); Argentina Fil: Iglesias, Juliana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina Fil: Iglesias, Juliana. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Escuela de Agrarias, Naturales y Ambientales; Argentina 2024-02-23T17:05:44Z 2024-02-23T17:05:44Z 2022-11 info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/16790 spa 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 Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires XII Congreso Nacional de Maíz "Maízificando conciencia", Pergamino, Buenos Aires, 8 al 10 de Noviembre de 2022. 3 p. |
| spellingShingle | Maíz Mejoramiento Genético Variación genética Maize Genetic Improvement Genetic Variation Subpoblaciones Perdomo, Santiago I. Baricalla, Agustín Ariel Iglesias, Juliana Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title | Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title_full | Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title_fullStr | Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title_full_unstemmed | Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title_short | Diversidad genética y estructura poblacional en maíz templado argentino a través de métodos de filogenética computacional |
| title_sort | diversidad genetica y estructura poblacional en maiz templado argentino a traves de metodos de filogenetica computacional |
| topic | Maíz Mejoramiento Genético Variación genética Maize Genetic Improvement Genetic Variation Subpoblaciones |
| url | http://hdl.handle.net/20.500.12123/16790 |
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