Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica
Rice (Oryza sativa L.) is included in the daily diet of 75% of the world population. In Costa Rica, the rice sector is a fundamental axis of attention, particularly because it is the main product within the basic food basket. Studying the morpho-agronomic variability of this cereal is a key factor f...
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| Format: | Online |
| Language: | spa eng |
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Universidad Pedagógica y Tecnológica de Colombia
2022
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/12567 |
| _version_ | 1801706480549756928 |
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| author | Zuniga Orozco, Andres Carrodeguas González, Ayerin |
| author_facet | Zuniga Orozco, Andres Carrodeguas González, Ayerin |
| author_sort | Zuniga Orozco, Andres |
| collection | OJS |
| description | Rice (Oryza sativa L.) is included in the daily diet of 75% of the world population. In Costa Rica, the rice sector is a fundamental axis of attention, particularly because it is the main product within the basic food basket. Studying the morpho-agronomic variability of this cereal is a key factor for planning breeding strategies. The objective of the present investigation was to determine which morpho-agronomic traits give the greater contribution to genetics in 54 rice lines. The evaluated lines come from a collection of the germplasm bank of CIAT in Colombia, these were sent to Costa Rica through the National Rice Corporation (CONARROZ). Seven quantitative and five qualitative morphological variables were measured. For the quantitative ones, the coefficient of variation was calculated and a Principal Component Analysis (PCA) was performed, as well as a Cluster Analysis. With the qualitative ones, a Multiple Correspondence Analysis (MCA) was performed. The most heterogeneous quantitative variables according to the values of the coefficient of variation were: tons per hectare, fertile stems and full grains per panicle. The PCA revealed that all the variables, except plant height, contributed to the total variance, and the MCA suggests that the qualitative variables measured in this research are discriminatory to differentiate genotypes. No correlations were reached between the quantitative variables studied. In the cluster analysis, four groups were obtained, one of which comprised the majority of the genotypes. The genotypes of this last group are characterized by having high values for the variable full grains per panicle and medium and high values for the rest of the variables. The results obtained are useful to choose the appropriate variables for selection. The cluster analysis allowed to establish the phylogenetic relationship between the lines for the planning of future crosses. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-12567 |
| institution | Revista Ciencia y Agricultura |
| language | spa eng |
| publishDate | 2022 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-125672022-06-16T14:50:26Z Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica Variabilidad morfo-agronómica en genotipos de arroz en el Pacífico Central, Costa Rica Zuniga Orozco, Andres Carrodeguas González, Ayerin PCA MCA Oryza sativa Caracteres morfológicos PCA MCA Oryza sativa Morphological characters Rice (Oryza sativa L.) is included in the daily diet of 75% of the world population. In Costa Rica, the rice sector is a fundamental axis of attention, particularly because it is the main product within the basic food basket. Studying the morpho-agronomic variability of this cereal is a key factor for planning breeding strategies. The objective of the present investigation was to determine which morpho-agronomic traits give the greater contribution to genetics in 54 rice lines. The evaluated lines come from a collection of the germplasm bank of CIAT in Colombia, these were sent to Costa Rica through the National Rice Corporation (CONARROZ). Seven quantitative and five qualitative morphological variables were measured. For the quantitative ones, the coefficient of variation was calculated and a Principal Component Analysis (PCA) was performed, as well as a Cluster Analysis. With the qualitative ones, a Multiple Correspondence Analysis (MCA) was performed. The most heterogeneous quantitative variables according to the values of the coefficient of variation were: tons per hectare, fertile stems and full grains per panicle. The PCA revealed that all the variables, except plant height, contributed to the total variance, and the MCA suggests that the qualitative variables measured in this research are discriminatory to differentiate genotypes. No correlations were reached between the quantitative variables studied. In the cluster analysis, four groups were obtained, one of which comprised the majority of the genotypes. The genotypes of this last group are characterized by having high values for the variable full grains per panicle and medium and high values for the rest of the variables. The results obtained are useful to choose the appropriate variables for selection. The cluster analysis allowed to establish the phylogenetic relationship between the lines for the planning of future crosses. El arroz (Oryza sativa L.) está incluido en la dieta alimenticia diaria del 75% de la población mundial. En Costa Rica, el sector arrocero es un eje fundamental de atención, particularmente porque es el principal producto dentro de la canasta básica alimentaria. Estudiar la variabilidad morfo-agronómica de este cereal es un factor clave para planificar estrategias de mejoramiento genético. El objetivo de la presente investigación fue determinar cuáles son los caracteres morfo-agronómicos que tiene un mayor aporte a la variabilidad genética en 54 líneas de arroz. Las líneas evaluadas provienen de una colección del banco de germoplasma del CIAT de Colombia, estas fueron enviadas a Costa Rica a través de la Corporación Nacional Arrocera (CONARROZ). Se midieron siete variables morfológicas cuantitativas y cinco cualitativas. Para las cuantitativas, se calculó el coeficiente de variación y se realizó un Análisis de Componentes Principales (PCA), así como un Análisis de Agrupamiento. Con las cualitativas se realizó un Análisis de Correspondencia Múltiple (MCA). Las variables cuantitativas más heterogéneas según los valores del coeficiente de variación fueron: toneladas por hectárea, tallos fértiles, y granos llenos por panícula. El PCA demostró que todas las variables, excepto la altura de la planta, aportaron a la varianza total, y el MCA sugiere que las variables cualitativas medidas en esta investigación, son discriminatorias para diferenciar genotipos. No se observó correlación entre las variables cuantitativas estudiadas. En el análisis de agrupamiento se obtuvo cuatro grupos de los cuales, uno de ellos abarcó la mayoría de los genotipos. Los genotipos de este último grupo se caracterizan por poseer altos valores para la variable granos llenos por panícula y valores medios y altos para el resto de las variables. Los resultados obtenidos son útiles para elegir las variables adecuadas para la selección. El análisis de conglomerados permitió establecer la relación filogenética entre las líneas para la planificación de futuros cruzamientos. Universidad Pedagógica y Tecnológica de Colombia 2022-02-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Texto application/pdf text/xml https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/12567 10.19053/01228420.v19.n1.2022.12567 Ciencia y Agricultura; Vol. 19 No. 1 (2022): ENERO- ABRIL Ciencia y Agricultura; Vol. 19 Núm. 1 (2022): ENERO- ABRIL 2539-0899 spa eng https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/12567/11469 https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/12567/11606 Copyright (c) 2022 Andres Zuniga http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | PCA MCA Oryza sativa Caracteres morfológicos PCA MCA Oryza sativa Morphological characters Zuniga Orozco, Andres Carrodeguas González, Ayerin Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title | Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title_alt | Variabilidad morfo-agronómica en genotipos de arroz en el Pacífico Central, Costa Rica |
| title_full | Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title_fullStr | Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title_full_unstemmed | Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title_short | Morpho-agronomic variability in rice genotypes in the Central Pacific, Costa Rica |
| title_sort | morpho agronomic variability in rice genotypes in the central pacific costa rica |
| topic | PCA MCA Oryza sativa Caracteres morfológicos PCA MCA Oryza sativa Morphological characters |
| topic_facet | PCA MCA Oryza sativa Caracteres morfológicos PCA MCA Oryza sativa Morphological characters |
| url | https://revistas.uptc.edu.co/index.php/ciencia_agricultura/article/view/12567 |
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