Examinando por Materia "Tolerancia"
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Publicación Acceso abierto Caracterización de variedades e híbridos de arroz bajo condiciones controladas para tolerancia a altas temperaturas y sequía(2022-02-27) Vargas Mendoza, Yani Sandrid; Araméndiz Tatis, HermesEnvironmental stress is one of the main limiting factors for the productivity of cereal crops worldwide. The growth of the rice plant is closely related to its environment and its adaptation to the variable conditions caused by the large number of environmental factors that cause abiotic stress. With the aim of characterizing rice varieties and hybrids under different conditions of abiotic stress under controlled conditions, experiments were carried out at the International Center for Tropical Agriculture during 2021, to evaluate the effect of drought, high night temperatures and low radiation on yield and its components. The results indicate that low radiation significantly reduced the percentage of fertility and the weight of 1000 grains, which means a reduction in yield among the genotypes evaluated; On the other hand, drought stress causes a reduction in yield, mainly in the hybrid HL23057. These results show that these abiotic stresses are limiting factors for crop productivity and that rice is sensitive to lack of irrigation and low radiation during the grain-filling phase. Therefore, understanding these stresses and identifying tolerant genotypes will help to achieve the goal of improving crops and thus minimizing the loss in rice crop yield, in the interests of preserving the food security of the world population.Publicación Acceso abierto Efecto de la aplicación de agua magnetizada en la mancha de madurez en banano (musa aaa), en la finca Giselle Beatriz, zona bananera, Magdalena(2020-11-12) Galvan Valencia, Moises Elias; Mercado Fernández, TeobaldisThe activities were carried out at the GISSELLE BEATRIZ farm located at 10°45′51″N 74°09′26″O, in the village of Rio Frio, which belongs to the municipality of Zona Bananera (Magdalena). This farm is owned by the company AGRO INVERSIONES BANANERAS DEL CARIBE SAS (AGROBANACARIBE), and is where the banana cultivation is established. The objective of this work was to evaluate the effect of the application of magnetically treated water (MTA) on the quality of the fruit and what effect the use of this technology has on the physiological development of the ripening spot, in order to contribute to the adjustment of this fundamental protocol in the production of this promising crop for the region. To achieve this objective, monitoring was carried out before, during and after in two lots with similar chemical and physical characteristics of soil, one with application of MTA and another with normal water (Lot 1 and Lot 5). A fruit diagnosis was carried out that allowed us to identify with which qualities the fruit that was being harvested arrived and the monitoring of the electrical conductivity to determine which soil presented more presence of salts. The monitoring consisted of a quality evaluation of the fruit harvested at 12 weeks, taking into account the corresponding pregnancy according to the banana calendar carried out by BANASAN 2019, which consisted of evaluating each banana bunch, taking as parameters the weight in kilograms of the bunch, the number of hands, the number of clusters of the bunch, the thickness of the fruit in inches, the length of the fruit in inches, and the clusters with the presence of ripening spots, taking into account the tolerance levels stipulated by the marketer BANASAN SAS. Of lots 1 and 5 evaluated, it was found that the application of magnetized water helps to improve fruit development while for the incidence and severity of maturity spot, magnetized water was not found to have an effect on this phenomenon in the fruit.Publicación Acceso abierto Imaginarios de los estudiantes de los grados 6° y 7° de la Institución Educativa Villa Margarita de la ciudad de Montería sobre la forma como el área de Educación Física, Recreación y Deportes contribuye a la convivencia(2022-06-30) Berrio Martínez, Alberto; Pinillos García, Jesús MaríaLos estudiantes del programa de Licenciatura en Educación Física Recreación y Deporte, de la Universidad de Córdoba, deben tener en cuenta en la planificación de la enseñanza los imaginarios de los estudiantes de las instituciones educativas, y no solo enfocarse en sus propios intereses académicos. En el desarrollo de la práctica pedagógica, es importante el uso de instrumentos como el diario de campo, el cual permite recolectar información, no solo, sobre los aciertos y desaciertos al implementar las clases, sino, sobre las características de los estudiantes. Que pueden servir como base para el diseño de investigaciones, que sirvan para reflexionar sobre la práctica. Este tipo de investigaciones sirven como un diagnóstico inicial orientado al reconocimiento de las características de los estudiantes y de la comunidad en general que sirve de base, para el diseño de unidades didácticas o proyectos pedagógicos, que atiendan a necesidades personales o sociales concretas, como la convivencia adecuada en este caso. Los valores son un eje clave para la integridad personal, académica y social, por lo tanto, desde el punto de vista del área de la Educación Física, Recreación y Deporte, es fundamental entender que la mayoría de los jóvenes de hoy día vienen de familia conflictivas lo que los hace ser violentos en algunos caso, y es ahí donde los docentes de esta área deben intervenir para que se obtenga una sana convivencia, ya que estas proporcionan oportunidades para el aprendizaje o fortalecimiento de valores sea desde actividades recreativas entre otras.