Rice is a major worldwide-cultivated crop. Besides it's the economical and social importance, this species have biological features that make it a model for basic studies. In the last years at least three sequencing project were announced generating valuable information. Mutants may be a powerful tool to study gene action, function and regulation. The goal of this study was to measure radiation effects on agronomical traits M3 mutated families derived from the rice cultivar BRS 7 "Taim". Seeds from 186 M3 families and from the cultivar BRS 7 "Taim", were sowed in the field and evaluated for plant height, cycle, tiller number, panicle number and panicle per tiller. For genotype separation a multivariate analysis and the Scott-Knott test were performed. Genetic similarity and Scott-Knott tests have show a great variation among families for all traits evaluated, but three families (M(3)149, M(3)152 and M(3)165) were superior for at least four traits.
Mutation; Oryza sativa; agronomical traits
