Hibridación interespecífica de arroz (Oryza sativa L. ssp. indica x Oryza sp.) para la obtención de segregantes F1
| dc.contributor.advisor | Reyes Borja, Walter Oswaldo | |
| dc.contributor.author | Toala Pita, Dayse Magaly | |
| dc.date.accessioned | 2025-04-28T16:54:32Z | |
| dc.date.available | 2025-04-28T16:54:32Z | |
| dc.date.issued | 2025 | |
| dc.identifier.uri | http://dspace.utb.edu.ec/handle/49000/18057 | |
| dc.description | Rice cultivation (Oryza sativa L.) It is one of the fundamental pillars of global food security, being a primary source of much of the population, as global demand increases, putting pressure on farmers to develop rice varieties more resistant to pests and diseases. This interspecific hybridization project of rice (Oryza sativa L.) was carried out with the aim of obtaining F1 segregants. It was held in the CEDEGE area, Babahoyo canton, Los Ríos province. The growth blocks of the parents were carried out at the El Palmar Experimental Farm, and the crosses were carried out on the premises of the Faculty of Agricultural Sciences of the Technical University of Babahoyo. A population of 12 reciprocal crosses was obtained, crossing 1 female parent x 6 male parents; and at the same time 6 female parents x 1 male parent. 1. SFL11 (male parent) x L-07, L-17, L-27, L-37, L-38 and GR (female parents); and, 2. L-07, L-17, L-27, L-37, L-38 and GR (Male Parents) x SFL11 (Female Parent). The variables recorded were the following: Number of emasculated (pollinated) flowers, Number of seeds harvested, Percentage of seeds harvested, Length (mm) and width (mm) of the seeds harvested. In this research, two tests were used, the Tukey Test and the "t-test" for paired samples, which allowed comparing the means of an experimental variable. As for the results, the crosses of genetic progenitors produce a wide genetic diversity, that for every 100 emasculated flowers a total of 30 seeds formed were achieved, which allows the timely selection of F1 segregants. There is genetic compatibility between the improved genotypes and SFL-11 commercial rice due to the fact that F1 seeds were obtained by simple hybridization | es_ES |
| dc.description | Rice cultivation (Oryza sativa L.) It is one of the fundamental pillars of global food security, being a primary source of much of the population, as global demand increases, putting pressure on farmers to develop rice varieties more resistant to pests and diseases. This interspecific hybridization project of rice (Oryza sativa L.) was carried out with the aim of obtaining F1 segregants. It was held in the CEDEGE area, Babahoyo canton, Los Ríos province. The growth blocks of the parents were carried out at the El Palmar Experimental Farm, and the crosses were carried out on the premises of the Faculty of Agricultural Sciences of the Technical University of Babahoyo. A population of 12 reciprocal crosses was obtained, crossing 1 female parent x 6 male parents; and at the same time 6 female parents x 1 male parent. 1. SFL11 (male parent) x L-07, L-17, L-27, L-37, L-38 and GR (female parents); and, 2. L-07, L-17, L-27, L-37, L-38 and GR (Male Parents) x SFL11 (Female Parent). The variables recorded were the following: Number of emasculated (pollinated) flowers, Number of seeds harvested, Percentage of seeds harvested, Length (mm) and width (mm) of the seeds harvested. In this research, two tests were used, the Tukey Test and the "t-test" for paired samples, which allowed comparing the means of an experimental variable. As for the results, the crosses of genetic progenitors produce a wide genetic diversity, that for every 100 emasculated flowers a total of 30 seeds formed were achieved, which allows the timely selection of F1 segregants. There is genetic compatibility between the improved genotypes and SFL-11 commercial rice due to the fact that F1 seeds were obtained by simple hybridization | es_ES |
| dc.description.abstract | El cultivo de arroz (Oryza sativa L.) es uno de los pilares fundamentales de la seguridad alimentaria mundial, siendo una fuente primaria gran parte de la población, a medida que la demanda global aumentando, la presión sobre los agricultores en desarrollar variedades de arroz más resistentes a plagas y enfermedades. Se llevó a cabo este proyecto de hibridación interespecífica de arroz (Oryza sativa L.) con el objetivo de obtener segregantes F1. Se realizó en la zona CEDEGE, cantón Babahoyo, provincia de Los Ríos. Los bloques de crecimiento de los progenitores se llevaron a cabo en la Granja Experimental El Palmar, y los cruzamientos se realizaron en los predios de la Facultad de Ciencias Agropecuarias de la Universidad Técnica de Babahoyo. Se obtuvo una población de 12 cruzamientos recíprocos, cruzando 1 progenitor femenino x 6 progenitores masculinos; y a la vez 6 progenitores femeninos x 1 progenitor masculino. 1. SFL11 (Progenitor masculino) x L-07, L-17, L-27, L-37, L-38 y GR (progenitores Femeninos); y, 2. L-07, L-17, L-27, L-37, L-38 y GR (Progenitores masculinos) x SFL11 (Progenitor femenino). Las variables registradas fueron las siguientes: Número de flores emasculadas (polinizadas), Número de semillas cosechadas, Porcentaje de semillas cosechadas, Longitud (mm) y ancho (mm) de las semillas cosechadas. En esta investigación se utilizaron dos pruebas, la de Test: Tukey y La “prueba de t” para muestras pareadas que permitió comparar las medias de una variable experimental. En cuanto a los resultados, los cruces de progenitores genéticos producen una amplia diversidad genética, que por cada 100 flores emasculadas se lograron un total de 30 semillas formadas lo que permite la selección oportuna de segregantes F1. Existe compatibilidad genética entre los genotipos mejorados y el arroz comercial SFL-11 debido a que se obtuvo semillas F1 mediante hibridación simple. | es_ES |
| dc.format.extent | 50 p. | es_ES |
| dc.language.iso | es | es_ES |
| dc.publisher | BABAHOYO: UTB, 2025 | es_ES |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
| dc.subject | Arroz | es_ES |
| dc.subject | Segregantes Cruza simple | es_ES |
| dc.subject | Polinización controlada | es_ES |
| dc.title | Hibridación interespecífica de arroz (Oryza sativa L. ssp. indica x Oryza sp.) para la obtención de segregantes F1 | es_ES |
| dc.type | bachelorThesis | es_ES |
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