EVALUACIÓN DE ARROZ (Oryza sativa L.) HÍBRIDOS Y VARIEDADES

In “Los Palacios” Rice Research Station, belonging to the National Institute of Agricultural Sciences, some morphoagronomic characters of rice hybrids and varieties which are used in breeding programs for salinity tolerance were studied, with the objective of valuing the degree of existing diversity in the genetic materials. Results revealed a great phenotypic diversity in which all characters contributed to a full variation, the highest correlations being between the final height and panicle length as well as full grains per panicle and yield. There were associations between rice hybrids and their parents; also, the resistance of all rice hybrids and varieties to lodging, threshing and Pyricularia grisea was evaluated.