Rendimiento de cuatro líneas promisorias de arroz (Oryza sp.) bajo sistema de siembra por trasplante (tres-cuatro plantas por sitio), cantón Daule - provincia del Guayas

The following study was carried out in the Daule canton, province of Guayas, with the objective of categorizing the method of planting three-four plants per site, commonly known as "mateado", four promising lines of rice PxJ-07, PxJ-17, PxJ-37 and PxJ-38 were used, which have been genetically obtained from the species Oryza sativa L. ssp. japonica and Oryza rufipogon G. or also called Puyón; in addition, an SFL-11 commercial control was used. Samples were taken in batches of 1 m2 in 3 repetitions for each line/cultivar. The data were analyzed by applying the Random Restricted Design (D.I.A) in the agronomic variables: number of tillers (NMP), plant height (cm) (AP), panicles per plant (NPP), panicle length (cm) (LP), grains per panicle (NGP), grain length (mm) (LGC) and grain width (mm)(AGC) with shell and grain length (mm)(LGD), grain width (mm)(AGD) without shell. To analyze the yield variable (Kg.ha-1), the Completely Random Design (DCA) was performed, as well as the Tukey test at 5%, Cluster analysis, Pearson correlation, relative variability (%) and principal components analysis. Regarding the results, Tukey's test and the analysis of relative variability (%), identified promising lines 7 and 38 with the highest yields (Kg.ha-1) and low variability (%). The descriptive statistics detected that the variables with differentiation criterion "greater is better" were NPP, LGD and Kg.ha-1, where the best results were presented in line 38 with 37 panicles, line 7.3 mm in husked grain length and line 7 with a yield of 13,411.58 Kg.ha-1. The Cluster analysis determined grouped the promising lines and the commercial control into two classes, presenting similarity for Class I the commercial control SFL-11 and the promissory line 37; for Class II promising lines 7, 17 and 38. Through Pearson's correlation analysis, it was identified that the yield variable (Kg.ha-1) was highly correlated NMP, NPP, LP and AGD.

• Autore principale: Pozo Almea, Deysi Mariela (author)
• Natura: bachelorThesis
• Pubblicazione: 2023
• Soggetti: Arroz; Líneas promisorias; Método de siembra; Rendimiento (Kg.ha-1).
• Accesso online: http://dspace.utb.edu.ec/handle/49000/13832