The big difficulty in the autogamous plants breeding is finding two parents who bring together all the interest phenotypes. In this case, the alternative would be to promote successive cycles of selection and interbreeding of the best individuals or the best families Geraldi The genetic progress periodic estimation is fundamental to guide the plant breeders about the selective strategies used and the alternatives that could be adopted to increase their efficiency.
Thus, the procedures commonly used to compare selective cycles are the different cycles families or lines evaluation, which can be done using common witnesses Ramalho The work objective was to estimate the genetic progress of two recurrent selection cycles based on the evaluation of families with common controls.
The base population, zero cycle C 0 , it was obtained by the combination of 20 carioca type grains, with favorable phenotypes for several agronomic interest characters. The parents were recombined in a circulating diallel design, with each parent participating in two crosses, generating 20 populations. From these populations, the families were derived and evaluated for three generations, in the generations F and F The same recombination procedure and C 0 evaluation were performed in cycle one C I.
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