Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico
Local varieties of corn continue to evolve as a result of land parcel domestication by small farmers. These varieties are also influenced by socio- economic, biotic and abiotic factors. Under this context, the objective of this paper is to decribe and classify patterns of phenotypical variations found in the physiological characteristics of the plant, tassle, ear, and seed from samples of blue and red corn populations originating from the mixteca regions in Oaxaca, Mexico. Thirty-two samples of blue corn and eighteen of red corn were collected and characterised. Both types were taken from random land parcels using twenty agromorphological variables. Significant differences were found (P < 0.05) between the red and blue populations with regards to the plant, tassel, ear, and seed. The blue corn sample presented high variations in all characteristics, unlike the red corn, which displayed more homogenous characteristics in the tassel, length and diametre of the ear and dimensions of the seed. In both cases, the patterns of phenotypical variation are linked to plant and ear height, duration of masculine or feminine flowering days and density of stalks on the tassel. Varieties tend to generate grouping patterns according to the origin of the populations. Three significantly different groups were determined in the sample of blue corn. They differed in plant and ear height, tassel description, seed width and thickness. The red grain populations were grouped according to three phenotypes and they differed in duration of masculine and feminine flowering days, plant and ear height and characteristics of ear and cob.
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UNIVERSIDAD DE GUADALAJARA
2020
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Chávez-Servia, José Luis Torres-Escamilla, Francisco Diego-Flores, Prisciliano Carrillo-Rodríguez, José Cruz |
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Chávez-Servia, José Luis Torres-Escamilla, Francisco Diego-Flores, Prisciliano Carrillo-Rodríguez, José Cruz Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| author_facet |
Chávez-Servia, José Luis Torres-Escamilla, Francisco Diego-Flores, Prisciliano Carrillo-Rodríguez, José Cruz |
| author_sort |
Chávez-Servia, José Luis |
| title |
Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| title_short |
Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| title_full |
Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| title_fullStr |
Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| title_full_unstemmed |
Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico |
| title_sort |
agromorphological variability among blue and red populations of maize from the mixteca, oaxaca, mexico |
| description |
Local varieties of corn continue to evolve as a result of land parcel domestication by small farmers. These varieties are also influenced by socio- economic, biotic and abiotic factors. Under this context, the objective of this paper is to decribe and classify patterns of phenotypical variations found in the physiological characteristics of the plant, tassle, ear, and seed from samples of blue and red corn populations originating from the mixteca regions in Oaxaca, Mexico. Thirty-two samples of blue corn and eighteen of red corn were collected and characterised. Both types were taken from random land parcels using twenty agromorphological variables. Significant differences were found (P < 0.05) between the red and blue populations with regards to the plant, tassel, ear, and seed. The blue corn sample presented high variations in all characteristics, unlike the red corn, which displayed more homogenous characteristics in the tassel, length and diametre of the ear and dimensions of the seed. In both cases, the patterns of phenotypical variation are linked to plant and ear height, duration of masculine or feminine flowering days and density of stalks on the tassel. Varieties tend to generate grouping patterns according to the origin of the populations. Three significantly different groups were determined in the sample of blue corn. They differed in plant and ear height, tassel description, seed width and thickness. The red grain populations were grouped according to three phenotypes and they differed in duration of masculine and feminine flowering days, plant and ear height and characteristics of ear and cob. |
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UNIVERSIDAD DE GUADALAJARA |
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2020 |
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http://e-cucba.cucba.udg.mx/index.php/e-Cucba/article/view/134 |
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rev-ecucba-mx-article1342023-08-15T16:30:41Z Agromorphological variability among blue and red populations of maize from the Mixteca, Oaxaca, Mexico VARIABILIDAD AGROMORFOLÓGICA ENTRE POBLACIONES DE MAÍZ AZUL Y ROJO DE LA MIXTECA OAXAQUEÑA, MÉXICO Chávez-Servia, José Luis Torres-Escamilla, Francisco Diego-Flores, Prisciliano Carrillo-Rodríguez, José Cruz Adaptación local intercambio de semillas diversidad fenotípica análisis multivariante agricultura indígena Local adaptation seed exchange phenotypic diversity multivariate analysis indigenous agriculture Local varieties of corn continue to evolve as a result of land parcel domestication by small farmers. These varieties are also influenced by socio- economic, biotic and abiotic factors. Under this context, the objective of this paper is to decribe and classify patterns of phenotypical variations found in the physiological characteristics of the plant, tassle, ear, and seed from samples of blue and red corn populations originating from the mixteca regions in Oaxaca, Mexico. Thirty-two samples of blue corn and eighteen of red corn were collected and characterised. Both types were taken from random land parcels using twenty agromorphological variables. Significant differences were found (P < 0.05) between the red and blue populations with regards to the plant, tassel, ear, and seed. The blue corn sample presented high variations in all characteristics, unlike the red corn, which displayed more homogenous characteristics in the tassel, length and diametre of the ear and dimensions of the seed. In both cases, the patterns of phenotypical variation are linked to plant and ear height, duration of masculine or feminine flowering days and density of stalks on the tassel. Varieties tend to generate grouping patterns according to the origin of the populations. Three significantly different groups were determined in the sample of blue corn. They differed in plant and ear height, tassel description, seed width and thickness. The red grain populations were grouped according to three phenotypes and they differed in duration of masculine and feminine flowering days, plant and ear height and characteristics of ear and cob. Las variedades locales de maíz siguen evolucionando bajo domesticación en terrenos de pequeños agricultores, y están influenciadas por factores socioeconómicos, bióticos y abióticos. En este contexto, el objetivo fue describir y clasificar los patrones de variación fenotípica de una colección de poblaciones de maíces de grano azul y rojo originarias de la Mixteca alta oaxaqueña, México, con base en caracteres fisiológicos, de planta, espiga, mazorca y grano. Se hizo una colecta y caracterización por separado de 32 muestras poblacionales de maíz azul y 18 de grano rojo, ambas en un diseño de bloques al azar, mediante veinte variables agromorfológicas. Se determinaron diferencias significativas (P < 0.05) entre poblaciones de maíz azul y rojo, en caracteres de planta, espiga, mazorca y grano. La colección de maíces azules presentó una alta variabilidad en todos los caracteres no así la colección de grano rojo, las que fueron más homogéneas en caracteres de espiga, longitud y diámetro de mazorca y dimensiones de grano. En ambos casos los patrones de variación fenotípica dependen de altura de planta y mazorca, días a floración masculina o femenina, y número de ramas en espiga, y tienden a generar patrones de agrupamiento según el origen de las poblaciones. En la colección de maíces azules se determinaron tres grupos significativamente diferentes y varían en altura de planta y mazorca, descripción de espiga, ancho y grosor de grano. Las poblaciones de grano rojo se agruparon en tres grupos fenotípicos y se diferenciaron en días a floración masculina o femenina, altura de planta y mazorca y caracteres de mazorca y olote. UNIVERSIDAD DE GUADALAJARA 2020-01-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf http://e-cucba.cucba.udg.mx/index.php/e-Cucba/article/view/134 10.32870/e-cucba.v0i12.134 e-CUCBA; Núm. 12 (6): e-CUCBA | Julio-Diciembre de 2019; 29-48 2448-5225 10.32870/e-cucba.v0i12 spa http://e-cucba.cucba.udg.mx/index.php/e-Cucba/article/view/134/130 10.32870/ecucba.v0i12.134.g130 Derechos de autor 2019 e-CUCBA |