nearly significantP = 0.0521
Epidermal cell density was also affected by elevation (abaxial side significant, adaxial side nearly significant with P = 0.0521), with lowland maize producing higher densities (i.e., smaller cell size) than midland and highland maize [Adaxial epidermal cell density: lowland maize, 1253.6 cells/cm 2 (35.69); midland maize, 1219.3 cells/cm 2 (38.84); highland maize, 1116.3 cells/cm 2 (35.22); Abaxial epidermal cell density: lowland maize, 1214.1 cells/cm 2 (33.76); midland maize, 1081.1 cells/cm 2 (34.04); highland maize, 1059.7 cells/cm 2 (33.47)].