Caracterización del porcentaje del centro blanco y su presencia a lo largo de la panícula en cultivares de arroz.

The present study aimed to characterize the percentage of white centers and their distribution along the panicle in different rice cultivars, with the aim of identifying those varieties with a lower incidence of this defect and, therefore, of higher commercial quality. Analysis of variance (ANOVA) and its 95% probability distribution were used, evaluating 81 genetic materials with five replicates each. Observational techniques and quantitative analysis were used for data collection, in order to determine the proportion of grains with white centers and their location within the panicle. The results showed that cultivar FL-110/G-112 obtained the highest number of grains per panicle section with 49.87, while cultivar G-111/G112 achieved a lower value with 21.8 grains per section. Cultivar G-113/G-FI-106 (25.92%) achieved the highest average percentage of white centers per section; while cultivar L-6-1 achieved a lower value with 3.06% white centers per section. Cultivar G-113/G-FI-106 obtained a higher value with 24.99% white centers per panicle; while cultivar L-6-1 achieved a lower value with 3.02% white centers per panicle. Cultivar G-113/G-FI-106 obtained a higher value than average with 8.34% of grains with white centers; while cultivar TAIWAN-J2 achieved a lower value with 1.29% of grains with white centers. The highest average was found in the center of the grain with 3.98% white centers; The lowest averages were obtained in the initial and final sections, with 2.76% and 2.7% white center, respectively. Twenty cultivars were selected, presenting low values of between 3.02% and 6.66% white center per panicle. In this study, the alternative hypothesis was fulfilled, which was defined as follows: The white center of rice grains is different in at least one cultivar.

• 1. autor: Vasquez Villamar, Deibis Roberto (author)
• Format: bachelorThesis
• Wydane: 2025
• Hasła przedmiotowe: Arroz; Calidad molinera; Centro blanco; Mejoramiento genético
• Dostęp online: http://dspace.utb.edu.ec/handle/49000/18003