Caracterización fenotípica de nueve líneas promisorias de arroz (Oryza sp.) de grano largo en la zona de CEDEGE, província de Los Ríos

Rice (Oryza sativa L.) is a global staple food and a crop of great economic importance. The general objective was to determine the phenotypic traits of different lines, and the specific objectives were: 1) to evaluate agronomic and productive characteristics of nine cultivars against a control, and 2) to select the best-performing lines. Analysis of variance and Tukey's test were applied. The trial included three replications and the cultivars L-12, L-33, L-17, L-19, L-3, L-27, L-07, GR, and SFL-11 (commercial control). Variables such as number of tillers, plant height, length and number of panicles, 1000-grain weight, yield per hectare, and grain quality (with and without hull) were analyzed. Data were obtained through direct observation and physical measurements. The analysis showed significant differences in yield (p = 0.0019), with SFL-11 having the highest yield (6281.19 kg/ha) and L-12 the lowest (2045.52 kg/ha). There were no significant differences in plant spacing (p = 0.509) or row spacing (p = 0.9514). Hulled grain length was highly significant (p < 0.0001), with L-17 being the longest (10.16 mm) and GR the shortest (9.17 mm). There were also differences in grain width (p < 0.0001), with SFL-11 (2.63 mm) and GR (1.92 mm) standing out. Significant differences were also observed in hulled grain. Three outstanding lines were selected: SFL-11, L-33 (5571.1 kg/ha), and GR (4629.61 kg/ha). Further research on L-33 and GR is recommended due to their potential.

• المؤلف الرئيسي: Arguello Haro, Alex Junior (author)
• التنسيق: bachelorThesis
• منشور في: 2025
• الموضوعات: Arroz; Caracterización fenotípica; Productividad; Rendimiento
• الوصول للمادة أونلاين: http://dspace.utb.edu.ec/handle/49000/17906