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Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
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Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
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Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean

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Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean
Journal Article

Acumulación de grados días y su efecto sobre el potencial de rendimiento de 15 accesiones de berenjena (Solanum melongena L.) en el Caribe Colombiano/Accumulation of degree days and their effect on the potential yield of 15 eggplant (Solanum melongena L.) accessions in the Colombian Caribbean

2019
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Overview
Los grados días de desarrollo (GDD) proporcionan una estimación de la energía térmica acumulada disponible para el desarrollo de un cultivo. El uso de los GDD permite medir los requerimientos de calor asociados a las etapas fenológicas del cultivo, lo que a su vez permite predecir cuándo ocurrirá una determinada etapa de la planta conociendo las temperaturas diarias. Este estudio tuvo como objetivo determinar las relaciones entre el efecto de los grados días (GD) hasta el crecimiento vegetativo, la primera floración y fructificación (CV, Fl y Fr) sobre el rendimiento total por planta (RT/P) de berenjena cultivada en campo abierto bajo un diseño de bloques completos al azar con 15 genotipos y cuatro repeticiones. Los resultados mostraron que: 1) Los genotipos que inician producción de frutos en menor tiempo requieren menos grados días (892,14-1.077,71 °C) para está fase fenológica, obteniendo una mayor producción. 2) Los genotipos C035 y C040 tuvieron un rendimiento promedio superior al promedio nacional con valores de 83,75 y 84,86 t ha-1, identificándose como futuras variedades a producir en la región del Caribe. 3) La región Caribe es apta para el establecimiento del cultivo, debido a que no hubo eventos limitantes de temperatura para la especie (temperaturas mayores a 35 °C y menores a 15 °C). 4) El análisis de componentes principales mostro asociación entre los genotipos C011, C042 y C015 con las variables RT/P, y los genotipos C011, C025 y C028 con los GD a CV, Fl y Fr. Estos resultados serían útiles para desarrollar un modelo para estimar el rendimiento con base en los GD. The growing degree-days (GDD) provide an estimate of the accumulated thermal energy available for the development of a crop. The use of GDD allows measuring the heat requirements associated with the phenological stages of the crop, which allows in turn, to predict when a certain plant stage will occur knowing the daily temperatures. The aim of this study was to establish relationships among the effect of degree days (DD) to vegetative growth, first flowering and fructification (VG, Fl and Fr), on total yield per plant (TY/P) of eggplant grown under open-field conditions employing a randomized complete block design with 15 genotypes and four replicates. The results showed that: 1) The genotypes that initiated fruit production in less time required fewer GDD (892.14-1,077.71 °C) for this phenological phase, obtaining higher productivity. 2) The genotypes C035 and C040 had an average yield higher than the national average with values of 83.75 and 84.86 t ha-1, being identified as future varieties to be produced in the Caribbean region. 3) The Caribbean region is suitable for the establishment of the crop as there were no events with limiting temperatures for this species (higher than 35 °C and lower than 15 °C). 4) The principal component analysis showed associations among the variable YT/P with the genotypes C011, C042, and C015; meanwhile, C032, C025, and C028 were associated with the variables DD to VG, Fl, and Fr. These results would be useful in developing a model to estimate yield with DD.

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