Evaluación del contenido de amilosa y calidad molinera de líneas promisorias y variedades comerciales de arroz, en la zona de Santa Lucía, provincia del Guayas

The present experimental work dealt with the evaluation of the amylose content and milling quality of promising lines and commercial varieties of rice, in the area of Santa Lucía, province of Guayas, which was developed in the Grain Quality Laboratory of the Faculty of Agricultural Sciences of the Technical University of Babahoyo. In the research, the rice varieties were used: Boreal, SFL - 11 and two promising lines PxJ 17 and PxJ 37. The Completely Random experimental design was used with four treatments and four repetitions. The variables evaluated were submitted to the analysis of variance; using Tukey's significance test at 95% probability. The conclusions raised determined that all the lines and varieties obtained clean and dry grains; the highest percentage of shell corresponded to the SFL-11 and Boreal varieties; Promising Line 1 PxJ 17 obtained a higher percentage of whole and classified grain, while Promising Line 2 PxJ 37 reached higher values for white belly and high protein content; the Boreal variety obtained higher percentages of rice and dust and the amylose content was found in a higher percentage in the SFL-11 variety.

The present experimental work dealt with the evaluation of the amylose content and milling quality of promising lines and commercial varieties of rice, in the area of Santa Lucía, province of Guayas, which was developed in the Grain Quality Laboratory of the Faculty of Agricultural Sciences of the Technical University of Babahoyo. In the research, the rice varieties were used: Boreal, SFL - 11 and two promising lines PxJ 17 and PxJ 37. The Completely Random experimental design was used with four treatments and four repetitions. The variables evaluated were submitted to the analysis of variance; using Tukey's significance test at 95% probability. The conclusions raised determined that all the lines and varieties obtained clean and dry grains; the highest percentage of shell corresponded to the SFL-11 and Boreal varieties; Promising Line 1 PxJ 17 obtained a higher percentage of whole and classified grain, while Promising Line 2 PxJ 37 reached higher values for white belly and high protein content; the Boreal variety obtained higher percentages of rice and dust and the amylose content was found in a higher percentage in the SFL-11 variety.

El presente trabajo experimental trató sobre la evaluación del contenido de amilosa y calidad molinera de líneas promisorias y variedades comerciales de arroz, en la zona de Santa Lucía, provincia del Guayas, el cual se desarrolló en el laboratorio de Calidad de Granos de la Facultad de Ciencias Agropecuarias de la Universidad Técnica de Babahoyo. En la investigación se utilizaron las variedades de arroz: Boreal, SFL – 11 y dos líneas promisorias PxJ 17 y PxJ 37. Se empleó el diseño experimental Completamente al Azar con cuatro tratamientos y cuatro repeticiones. Las variables evaluadas fueron sometidas al análisis de varianza; utilizando la prueba de significancia de Tukey al 95 % de probabilidad. Las conclusiones planteadas determinaron que todas las líneas y variedades obtuvieron granos limpios y secos; el mayor porcentaje de cáscara correspondió a las variedades SFL-11 y Boreal; la Línea promisoria 1 PxJ 17 obtuvo mayor porcentaje de grano integral y clasificado, mientras que la Línea promisoria 2 PxJ 37 alcanzó mayores valores para panza blanca y alto contenido de proteínas; la variedad Boreal obtuvo mayores valores porcentajes de arrocillo y polvillo y el contenido de amilosa se encontró en mayor porcentaje en la variedad SFL-11.