Genetic relationships in accessions of mexican maize races (Zea mays L.)
Objective: Characterize representative accessions of mexican maize races with ISSR molecular markers, which help to infer genetic relationships linked to their origin, morphology, ecogeographic aspects, distribution and uses. Design/methodology/approach: 54 representative accessions of mexican maize races characterized with ten ISSR molecular markers were used. Genetic distances were calculated with the Dice coefficient and the dendrogram was generated using the hierarchical clustering method of Ward's minimum variance. To visualize the accessions in two dimensions, a Principal Coordinate Analysis was carried out with the standardized minimum variance method. Results: In 76 loci detected, the cluster analysis with a semi-partial R2 of 0.04 build five groups that shared phylogenetic, ecogeographic, morphoagronomic, distribution and special use characteristics. The main coordinate analysis showed 21.2% of the total variation for the first two coordinates. First main coordinate explained 12.43% of the total variation and separated the accessions by geographical location and special uses, that is, those used for breeding programs and for special culinary uses; second main coordinate explained 8.77% of the total variation and separated the samples by altitudinal ranges and biological cycle. Limitations on study/implications: Only one representative accession was used for each maize race, considering the genetic variability of this crop, more accessions of the same race should be included. Findings/conclusions: Genetic relationships between race accessions are due to altitudinal and geographical patterns; although some groupings shared phylogenetic, morpho-agronomic, distribution and use aspects. Keywords: Genetic variability, plant genetic resources, molecular characterization, integral classification.
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Colegio de Postgraduados
2020
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Barrera Guzman, Luis Angel Legaria Solano, Juan Porfirio |
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Barrera Guzman, Luis Angel Legaria Solano, Juan Porfirio Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| author_facet |
Barrera Guzman, Luis Angel Legaria Solano, Juan Porfirio |
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Barrera Guzman, Luis Angel |
| title |
Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| title_short |
Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| title_full |
Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| title_fullStr |
Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| title_full_unstemmed |
Genetic relationships in accessions of mexican maize races (Zea mays L.) |
| title_sort |
genetic relationships in accessions of mexican maize races (zea mays l.) |
| description |
Objective: Characterize representative accessions of mexican maize races with ISSR molecular markers, which help to infer genetic relationships linked to their origin, morphology, ecogeographic aspects, distribution and uses.
Design/methodology/approach: 54 representative accessions of mexican maize races characterized with ten ISSR molecular markers were used. Genetic distances were calculated with the Dice coefficient and the dendrogram was generated using the hierarchical clustering method of Ward's minimum variance. To visualize the accessions in two dimensions, a Principal Coordinate Analysis was carried out with the standardized minimum variance method.
Results: In 76 loci detected, the cluster analysis with a semi-partial R2 of 0.04 build five groups that shared phylogenetic, ecogeographic, morphoagronomic, distribution and special use characteristics. The main coordinate analysis showed 21.2% of the total variation for the first two coordinates. First main coordinate explained 12.43% of the total variation and separated the accessions by geographical location and special uses, that is, those used for breeding programs and for special culinary uses; second main coordinate explained 8.77% of the total variation and separated the samples by altitudinal ranges and biological cycle.
Limitations on study/implications: Only one representative accession was used for each maize race, considering the genetic variability of this crop, more accessions of the same race should be included.
Findings/conclusions: Genetic relationships between race accessions are due to altitudinal and geographical patterns; although some groupings shared phylogenetic, morpho-agronomic, distribution and use aspects.
Keywords: Genetic variability, plant genetic resources, molecular characterization, integral classification. |
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Colegio de Postgraduados |
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2020 |
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https://revista-agroproductividad.org/index.php/agroproductividad/article/view/1642 |
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AT barreraguzmanluisangel geneticrelationshipsinaccessionsofmexicanmaizeraceszeamaysl AT legariasolanojuanporfirio geneticrelationshipsinaccessionsofmexicanmaizeraceszeamaysl AT barreraguzmanluisangel relacionesgeneticasenmuestrasderazasmexicanasdemaizzeamaysl AT legariasolanojuanporfirio relacionesgeneticasenmuestrasderazasmexicanasdemaizzeamaysl |
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oai:ojs.pkp.sfu.ca:article16422020-06-13T00:31:19Z Genetic relationships in accessions of mexican maize races (Zea mays L.) Relaciones genéticas en muestras de razas mexicanas de maíz (Zea mays L.) Barrera Guzman, Luis Angel Legaria Solano, Juan Porfirio Genetic variability, plant genetic resources, molecular characterization, integral classification. Variabilidad genética, recursos fitogenéticos, caracterización molecular, clasificación integral. Objective: Characterize representative accessions of mexican maize races with ISSR molecular markers, which help to infer genetic relationships linked to their origin, morphology, ecogeographic aspects, distribution and uses. Design/methodology/approach: 54 representative accessions of mexican maize races characterized with ten ISSR molecular markers were used. Genetic distances were calculated with the Dice coefficient and the dendrogram was generated using the hierarchical clustering method of Ward's minimum variance. To visualize the accessions in two dimensions, a Principal Coordinate Analysis was carried out with the standardized minimum variance method. Results: In 76 loci detected, the cluster analysis with a semi-partial R2 of 0.04 build five groups that shared phylogenetic, ecogeographic, morphoagronomic, distribution and special use characteristics. The main coordinate analysis showed 21.2% of the total variation for the first two coordinates. First main coordinate explained 12.43% of the total variation and separated the accessions by geographical location and special uses, that is, those used for breeding programs and for special culinary uses; second main coordinate explained 8.77% of the total variation and separated the samples by altitudinal ranges and biological cycle. Limitations on study/implications: Only one representative accession was used for each maize race, considering the genetic variability of this crop, more accessions of the same race should be included. Findings/conclusions: Genetic relationships between race accessions are due to altitudinal and geographical patterns; although some groupings shared phylogenetic, morpho-agronomic, distribution and use aspects. Keywords: Genetic variability, plant genetic resources, molecular characterization, integral classification. Objetivo: Caracterizar muestras representativas de razas mexicanas de maíz con marcadores moleculares ISSR, que ayuden a inferir relaciones genéticas vinculadas a su origen, morfología, aspectos ecogeográficos, distribución y usos. Diseño/metodología/aproximación: Se emplearon 54 muestras representativas de razas mexicanas de maíz caracterizadas con diez marcadores moleculares ISSR. Las distancias genéticas se calcularon con el coeficiente Dice y se generó un dendrograma con el método de agrupamiento jerárquico de varianza mínima de Ward. Para visualizar las muestras en dos dimensiones se efectúo un Análisis de Coordenadas Principales con el método de varianza mínima estandarizada. Resultados: En 76 loci detectados, el análisis de agrupamiento con una R2 semiparcial de 0.04 formó cinco grupos que compartieron características filogenéticas, ecogeográficas, morfoagronómicas, de distribución y usos especiales. El análisis de coordenadas principales mostró 21.2 % de la variación total para las dos primeras coordenadas. La primera coordenada principal explicó el 12.43 % de la variación total y separó las muestras por ubicación geográfica y usos especiales; la segunda coordenada principal explicó el 8.77 % de la variación total y separó las muestras por rangos altitudinales y ciclo biológico. Limitaciones del estudio/implicaciones: Se empleó únicamente una muestra representativa por cada raza de maíz, considerando la variabilidad genética de este cultivo se deben incluir más muestras de la misma raza. Hallazgos/conclusiones: Las relaciones genéticas entre las muestras de razas de maíz obedecen a patrones altitudinales y geográficos; aunque algunos agrupamientos compartieron aspectos filogenéticos, morfoagronómicos, de distribución y usos. Palabras clave: Variabilidad genética, recursos fitogenéticos, caracterización molecular, clasificación integral. Colegio de Postgraduados 2020-04-04 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revista-agroproductividad.org/index.php/agroproductividad/article/view/1642 10.32854/agrop.vi.1642 AgroP; Vol. 13 No. 3 (2020): MARZO Agro Productividad; Vol. 13 Núm. 3 (2020): MARZO 2594-0252 2448-7546 spa https://revista-agroproductividad.org/index.php/agroproductividad/article/view/1642/1285 Derechos de autor 2020 AgroProductividad |