This paper reports and discusses the results and behaviour of a 'Guaxupé' self-pollinated cassava progeny in Campinas, State of Sao Paulo. Datas obtained suggest that 'Guaxupé' is homozigous for some physical characters of aereal part and roots, because 92,1% of plants from the progeny considered were similar with that cultivar. It was also verified that 52% and 30% of them presented higher yield of roots and harvesting index than the check cultivar.