Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia
This research was undertaken on four farms in the department of Caquetá in order to analyze the physiological responses of five copoazu phenotypes from a Sinchi collection in the early stages of growth under different canopy coverings. To create such an effect, an experimental design of blocks was u...
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| Format: | Online |
| Language: | spa |
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2011
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/1145 |
| _version_ | 1801706236214771712 |
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| author | Guerrero, Diana Carolina Barrera, Jaime Alberto Hernández, María Soledad Vargas, Guillermo |
| author_facet | Guerrero, Diana Carolina Barrera, Jaime Alberto Hernández, María Soledad Vargas, Guillermo |
| author_sort | Guerrero, Diana Carolina |
| collection | OJS |
| description | This research was undertaken on four farms in the department of Caquetá in order to analyze the physiological responses of five copoazu phenotypes from a Sinchi collection in the early stages of growth under different canopy coverings. To create such an effect, an experimental design of blocks was used with five copoazu phenotypes distributed at random. During the period of evaluation, variables of plant height, leaf area, dry mass, and rates of growth were determined. The direct variables increased constantly, especially in size and quantity of dry materials, as well as maintaining leaf area. In contrast, the rates of growth, net assimilation rate, relative growth rate, leaf area index and leaf area ratio presented oscillating values in five ecotypes during the period of evaluation. These results indicated differential behaviour of copoazu in the first phases of growth which indicated an interaction of a genotype with an environment reflected in the different behaviours of physiological determinants of the plant and providing evidence of certain plasticity in phenotypes, according to each of the covers, the best of which under 15% coverage. The ecotypes 4 and 11 differed from the other ecotypes presenting better adaptability in all sites independent of the percentage of cover. Previous studies showed that, according to their morpho-agronomic characteristics, these ecotypes present a high productivity and are included in the group characterised by different levels of tolerance to the attacks of witch broom (Crinipelis perniciosa). |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-1145 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | spa |
| publishDate | 2011 |
| publisher | Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-11452020-08-04T00:16:02Z Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia Análisis de crecimiento durante la fase vegetativa de cinco fenotipos de copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. en la amazonia occidental colombiana Guerrero, Diana Carolina Barrera, Jaime Alberto Hernández, María Soledad Vargas, Guillermo Canopy cover Genotype-environment Physiological indicators Agriculture Cobertura de dosel Genotipo-ambiente Indicadores fisiológicos Agricultura This research was undertaken on four farms in the department of Caquetá in order to analyze the physiological responses of five copoazu phenotypes from a Sinchi collection in the early stages of growth under different canopy coverings. To create such an effect, an experimental design of blocks was used with five copoazu phenotypes distributed at random. During the period of evaluation, variables of plant height, leaf area, dry mass, and rates of growth were determined. The direct variables increased constantly, especially in size and quantity of dry materials, as well as maintaining leaf area. In contrast, the rates of growth, net assimilation rate, relative growth rate, leaf area index and leaf area ratio presented oscillating values in five ecotypes during the period of evaluation. These results indicated differential behaviour of copoazu in the first phases of growth which indicated an interaction of a genotype with an environment reflected in the different behaviours of physiological determinants of the plant and providing evidence of certain plasticity in phenotypes, according to each of the covers, the best of which under 15% coverage. The ecotypes 4 and 11 differed from the other ecotypes presenting better adaptability in all sites independent of the percentage of cover. Previous studies showed that, according to their morpho-agronomic characteristics, these ecotypes present a high productivity and are included in the group characterised by different levels of tolerance to the attacks of witch broom (Crinipelis perniciosa). El trabajo se desarrolló en cuatro fincas del departamento de Caquetá, con el objetivo de analizar el comportamiento fisiológico durante las etapas tempranas de crecimiento de cinco fenotipos de copoazú colección Sinchi bajo diferentes coberturas de dosel de árboles. Para tal efecto se utilizó un diseño experimental de bloques, en el cual se distribuyeron al azar los cinco fenotipos de copoazú. Durante el periodo de evaluación se determinaron variables de altura, área foliar, masa seca y tasas de crecimiento. Las variables directas mostraron un incremento constante especialmente en tamaño y en ganancia de materia seca, además se presentó un comportamiento estable en la duración del área foliar, por el contrario, las tasas de crecimiento como la tasa de asimilación neta, tasa de crecimiento relativo, índice del área foliar y la relación del área foliar, presentaron valores fluctuantes en los cinco ecotipos a lo largo del periodo de evaluación. Este resultado indica un comportamiento diferencial en las primeras fases de crecimiento del copoazú, lo que hace presumir que hay una interacción genotipo ambiente reflejada en los diferentes comportamientos de los determinantes fisiológicos de la planta evidenciando cierta plasticidad fenotípica de acuerdo con cada una de las coberturas, encontrándose mejor comportamiento bajo un 15% de sombreamiento. Los ecotipos 4 y 11 se diferenciaron del resto de ecotipos por presentar mejor adaptabilidad en todas las localidades independientemente del porcentaje de cobertura. Estudios previos mostraron que estos ecotipos según sus características morfoagronómicas presentan una alta productividad y se encuentran en grupos caracterizados por diferentes niveles de tolerancia a los ataques de la escoba de bruja (Crinipelis perniciosa). Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2011-01-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto text text Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/1145 10.17584/rcch.2007v1i1.1145 Revista Colombiana de Ciencias Hortícolas; Vol. 1 No. 1 (2007); 52-66 Revista Colombiana de Ciencias Hortícolas; Vol. 1 Núm. 1 (2007); 52-66 Revista Colombiana de Ciencias Hortícolas; Vol. 1 No 1 (2007); 52-66 Revista Colombiana de Ciencias Hortícolas; V. 1 N. 1 (2007); 52-66 Revista Colombiana de Ciencias Hortícolas; v. 1 n. 1 (2007); 52-66 2422-3719 2011-2173 spa https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/1145/1144 Colombia Colombia Colombia Colombia Colombia |
| spellingShingle | Canopy cover Genotype-environment Physiological indicators Agriculture Cobertura de dosel Genotipo-ambiente Indicadores fisiológicos Agricultura Guerrero, Diana Carolina Barrera, Jaime Alberto Hernández, María Soledad Vargas, Guillermo Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title | Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title_alt | Análisis de crecimiento durante la fase vegetativa de cinco fenotipos de copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. en la amazonia occidental colombiana |
| title_full | Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title_fullStr | Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title_full_unstemmed | Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title_short | Growth analysis during the vegetative phase of five phenotypes of copoazú Theobroma grandiflorum (Willd ex Spreng) Schum. in the Colombian western Amazonia |
| title_sort | growth analysis during the vegetative phase of five phenotypes of copoazu theobroma grandiflorum willd ex spreng schum in the colombian western amazonia |
| topic | Canopy cover Genotype-environment Physiological indicators Agriculture Cobertura de dosel Genotipo-ambiente Indicadores fisiológicos Agricultura |
| topic_facet | Canopy cover Genotype-environment Physiological indicators Agriculture Cobertura de dosel Genotipo-ambiente Indicadores fisiológicos Agricultura |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/1145 |
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