Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP

Ilustraciones, gráficas, tablas

Autores:: Torres González, Laura Marcela

Tipo de recurso:

Fecha de publicación:: 2023

Institución:: Universidad Nacional de Colombia

Repositorio:: Universidad Nacional de Colombia

Idioma:: spa

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network_acronym_str	UNACIONAL2
network_name_str	Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
dc.title.translated.eng.fl_str_mv	Heterotic grouping of tropical maize inbred lines using Diallel crosses and SNP markers
title	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
spellingShingle	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP 570 - Biología::576 - Genética y evolución Fitomejoramiento Plant breeding Marcadores genéticos Genetic markers Endogamia Inbreeding Análisis dialelo Diallel analysis Técnicas genéticas Genetic techniques Grupos heteróticos Maíz tropical Dialelo Habilidad combinatoria específica SNP Análisis de clúster Heterotic groups Tropical maize Diallel Specific combine ability SNP
title_short	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
title_full	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
title_fullStr	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
title_full_unstemmed	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
title_sort	Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP
dc.creator.fl_str_mv	Torres González, Laura Marcela
dc.contributor.advisor.none.fl_str_mv	Chacón Sánchez, María Isabel Mayor Durán, Victor Manuel
dc.contributor.author.none.fl_str_mv	Torres González, Laura Marcela
dc.subject.ddc.spa.fl_str_mv	570 - Biología::576 - Genética y evolución
topic	570 - Biología::576 - Genética y evolución Fitomejoramiento Plant breeding Marcadores genéticos Genetic markers Endogamia Inbreeding Análisis dialelo Diallel analysis Técnicas genéticas Genetic techniques Grupos heteróticos Maíz tropical Dialelo Habilidad combinatoria específica SNP Análisis de clúster Heterotic groups Tropical maize Diallel Specific combine ability SNP
dc.subject.agrovoc.none.fl_str_mv	Fitomejoramiento Plant breeding Marcadores genéticos Genetic markers Endogamia Inbreeding Análisis dialelo Diallel analysis Técnicas genéticas Genetic techniques
dc.subject.proposal.spa.fl_str_mv	Grupos heteróticos Maíz tropical Dialelo Habilidad combinatoria específica SNP Análisis de clúster
dc.subject.proposal.eng.fl_str_mv	Heterotic groups Tropical maize Diallel Specific combine ability SNP
description	Ilustraciones, gráficas, tablas
publishDate	2023
dc.date.accessioned.none.fl_str_mv	2023-08-10T16:47:42Z
dc.date.available.none.fl_str_mv	2023-08-10T16:47:42Z
dc.date.issued.none.fl_str_mv	2023
dc.type.spa.fl_str_mv	Trabajo de grado - Maestría
dc.type.driver.spa.fl_str_mv	info:eu-repo/semantics/masterThesis
dc.type.version.spa.fl_str_mv	info:eu-repo/semantics/acceptedVersion
dc.type.content.spa.fl_str_mv	Text
dc.type.redcol.spa.fl_str_mv	http://purl.org/redcol/resource_type/TM
status_str	acceptedVersion
dc.identifier.uri.none.fl_str_mv	https://repositorio.unal.edu.co/handle/unal/84523
dc.identifier.instname.spa.fl_str_mv	Universidad Nacional de Colombia
dc.identifier.reponame.spa.fl_str_mv	Repositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourl.spa.fl_str_mv	https://repositorio.unal.edu.co/
url	https://repositorio.unal.edu.co/handle/unal/84523 https://repositorio.unal.edu.co/
identifier_str_mv	Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia
dc.language.iso.spa.fl_str_mv	spa
language	spa
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dc.rights.license.spa.fl_str_mv	Atribución-NoComercial 4.0 Internacional
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dc.format.extent.spa.fl_str_mv	xix, 91 páginas + anexos
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dc.publisher.spa.fl_str_mv	Universidad Nacional de Colombia
dc.publisher.program.spa.fl_str_mv	Palmira - Ciencias Agropecuarias - Maestría en Ciencias Agrarias
dc.publisher.faculty.spa.fl_str_mv	Facultad de Ciencias Agropecuarias
dc.publisher.place.spa.fl_str_mv	Palmira, Valle del Cauca, Colombia
dc.publisher.branch.spa.fl_str_mv	Universidad Nacional de Colombia - Sede Palmira
institution	Universidad Nacional de Colombia
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spelling	Atribución-NoComercial 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Chacón Sánchez, María Isabele07b0a6a7caf29ce7306e5f505bd5d82Mayor Durán, Victor Manuel25cdec9199ec9ec97a1fb54c0ba19e41Torres González, Laura Marcelac5dee68d53d57751e606074f42a64f522023-08-10T16:47:42Z2023-08-10T16:47:42Z2023https://repositorio.unal.edu.co/handle/unal/84523Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/Ilustraciones, gráficas, tablasUno de los objetivos principales de los programas de mejoramiento genético de maíz es desarrollar líneas parentales endocriadas de alto valor genético que al ser cruzadas puedan producir híbridos con características agronómicas superiores. En Colombia, la obtención de este tipo de híbridos es de alto interés ya que pueden ayudar a aumentar el rendimiento y la producción de maíz y cerrar la brecha que existe entre la producción nacional y la importación de maíz que actualmente es del 74%. Actualmente el programa de mejoramiento genético de maíz de Semillas Valle no cuenta con una caracterización del germoplasma que le permita establecer estrategias eficientes para la obtención de híbridos de alto rendimiento. En el presente estudio se llevó a cabo la clasificación de líneas endocriadas en grupos heteróticos a partir de datos genómicos empleando marcadores moleculares tipo SNP y variables fenotípicas en 66 líneas del programa de mejoramiento de Semillas Valle S.A., y a partir de datos de campo de un ensayo de tipo dialelo donde participaron 30 parentales. A partir de un análisis de clúster de los datos SNPs se identificaron tres grupos heteróticos o subpoblaciones. Por otra parte, los resultados del dialelo permitieron clasificar las líneas en dos grupos heteróticos basados en los efectos de la habilidad combinatoria específica (HCE), y en tres grupos basados en la habilidad combinatoria general para múltiples rasgos (HGCAMT). Sin embargo, la integración de las metodologías podría proveer más información respecto a los grupos heteróticos presentes en la población evaluada. (Texto tomado de la fuente)One of the main objectives on the maize breeding programs is the development of parental inbred lines of high genetic value, which crossings could produce new hybrids with improved agronomic characteristics. In Colombia, obtaining this kind of hybrids is highly interesting because it can help to obtain better yielding and improve the maize production, to close the gap between the national production and the maize imports, which currently represents the 74% of the internal consume. Currently, the Semillas Valle maize breeding program does not have with the characterization of the germplasm to be used in the establishment efficient strategies for the high yielding hybrids. In this study, we are going to evaluate the classification of inbred lines into heterotic groups using SNP molecular markers, and field data of 66 lines from the Semillas Valle S.A. maize breeding program, and from field data of a diallel crossing essay where 30 parental lines participate. From a cluster analysis of the SNPs data, we identify three heterotic groups or subpopulations. In the other hand, diallel results allows us to infer three different groups. Nevertheless, the integration of both methodologies could provide additional information about the heterotic groups present in the population.Semillas Valle S.A.MaestríaMagíster en Ciencias AgrariasEn el ensayo se incluyeron 30 líneas élite del programa de mejoramiento de Semillas Valle S.A como parentales, 15 líneas de grano color blanco y 15 líneas de grano color amarillo. Las líneas fueron seleccionadas por ser las líneas parentales con mayor cantidad de híbridos experimentales formados desde 2013. Con ayuda de la herramienta informática Semillas (v. 2018) (Semillas Valle S.A.), se programaron cruzamientos entre los 30 parentales, sin incluir los recíprocos, de acuerdo con el método II descrito por Griffing (1956), para un total de 435 cruzamientos [(P(P-1)) /2] y los 30 parentales. La obtención de semilla se realizó en las instalaciones del Centro Experimental Guillermo Paz Casas de Semillas Valle S.A. ubicado en el municipio de El Cerrito, Valle del Cauca. Los cruzamientos fueron formados mediante polinizaciones manuales para asegurar la integridad genética de los materiales. Para ello, las líneas hembra y macho se sembraron en una relación de 2 surcos a 1, respectivamente. Cada hembra se dispuso en campo en 2 surcos de 2 metros, separados a 0,8 m entre surcos, en grupos de 10 a 15 hembras seguidas por el macho correspondiente para la formación del híbrido. Los parentales se obtuvieron mediante autopolinizaciones manuales, en 2 surcos de 2 metros cada uno. La trazabilidad de los procesos de campo se realizó identificando cada genotipo con un código QR sobre el cual se registraron, además de la información de los cruzamientos realizados, los datos fenotípicos recolectados para cada material. La cosecha de dichos materiales se realizó de forma manual al momento de madurez fisiológica (aprox. 105 días después de siembra). La semilla fue llevada a secamiento en las celdas de secado de la planta de beneficio de semillas de Semillas Valle S.A., ubicada en el municipio de Yumbo, Valle del Cauca, hasta alcanzar el 14% de humedad. Posteriormente se seleccionó manualmente por el equipo experimentado de Semillas Valle y fue almacenada en cuarto frío a 4°C hasta la siembra para garantizar su calidad fisiológica.Genética y FitomejoramientoCiencias Agropecuarias.Sede Palmiraxix, 91 páginas + anexosapplication/pdfspaUniversidad Nacional de ColombiaPalmira - Ciencias Agropecuarias - Maestría en Ciencias AgrariasFacultad de Ciencias AgropecuariasPalmira, Valle del Cauca, ColombiaUniversidad Nacional de Colombia - Sede Palmira570 - Biología::576 - Genética y evoluciónFitomejoramientoPlant breedingMarcadores genéticosGenetic markersEndogamiaInbreedingAnálisis dialeloDiallel analysisTécnicas genéticasGenetic techniquesGrupos heteróticosMaíz tropicalDialeloHabilidad combinatoria específicaSNPAnálisis de clústerHeterotic groupsTropical maizeDiallelSpecific combine abilitySNPDeterminación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNPHeterotic grouping of tropical maize inbred lines using Diallel crosses and SNP markersTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TMZhao, J., Li, C., Song, W., Wang, Y., Zhang, R., Wang, J., Wang, F., Tian, H., & Wang, R. 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BMC Genomics, 17(1). https://doi.org/10.1186/s12864-016-3041-3EstudiantesInvestigadoresORIGINAL1070976076.2023.pdf1070976076.2023.pdfTesis de Maestrías en Ciencias Agrarías, fitomejoramiento.application/pdf2591328https://repositorio.unal.edu.co/bitstream/unal/84523/2/1070976076.2023.pdfc10c7503626b55f1f9a062e3ec8deaaaMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-85879https://repositorio.unal.edu.co/bitstream/unal/84523/3/license.txteb34b1cf90b7e1103fc9dfd26be24b4aMD53THUMBNAIL1070976076.2023.pdf.jpg1070976076.2023.pdf.jpgGenerated Thumbnailimage/jpeg4888https://repositorio.unal.edu.co/bitstream/unal/84523/4/1070976076.2023.pdf.jpgecf9aaf3f09b66329e40b5524f9c05abMD54unal/84523oai:repositorio.unal.edu.co:unal/845232023-08-16 23:04:37.653Repositorio Institucional Universidad Nacional de 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Determinación de grupos heteróticos en líneas endogámicas de maíz tropical mediante cruzamientos dialélicos y marcadores SNP

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