When abundant precipitations are associated to physical edaphic problems then excesses of water may appear in soils of agricultural interest, affecting dissimilarly to the morfophysiology of the crop plants. The experiment was a split plot design at random in complete blocks with five repetitions in a Typic Hapluster soil. The presence or absence of the soil flooding was considered like plots and the genotypes like sub-plots. Stomatal density and stomatal length were measured in 10-mo old sugar cane plants in two crop cycles, plant cane and first ratoon. The stress intensity was determined. It was proven that the stress intensity inverted increased the stomatal density at a 9.0 % in plant cane and first ratoon, while the stomatal length in excess of water in soil was reduced at 12.0 % for both crop cycles, with important differences among the studied genotypes. Inverse correlations were detected between stomatal density and stomatal length. It concluded that the oxygen deficiency in flooding soil induces morphologic changes in the stomatal density and length with wide differentiation among genotypes in plant cane and first ratoon crops cycles.