COMPORTAMIENTO Y SELECCIÓN DE LÍNEAS AVANZADAS DE ARROZ (Oryza sativa L.) OBTENIDAS POR EL PROGRAMA DE MEJORAMIENTO EN LOS PALACIOS

Low yields, climate change effects and heterogeneous culture conditions are some reasons for the development of new rice cultivars. This trial was developed with the objective of studying the behavior of sixteen advanced lines of rice under flooded conditions and to select the best for moving on to a higher stage. A Completely Randomized Design with three replications was used, the genotypes constituted the treatments and four commercial control were used. The available information was processed statistically by the combination of univariate and multivariate analysis. Results showed correlation of the yield with all their components, the cluster analysis detected that the maximum genetic diversity between types V and VI and the minimum was detected between types I and II and the regression indicated that the model had a good adjustment (93.5 %). The combination of statistical analyses used allowed to select five more promissory lines and to propose its validation.