Mutagenesis was accomplished by exposing imbibed seed to a 3% v/v concentration of Ethyl Methanesulfonate (EMS). Four mutant lines, the parent variety and a control were evaluated for their physical properties. The mutant lines were replicated three times in the field, while the parent line and the control were replicated 6 times. Macrostructural and microstructural investigations were done, in order to explain the differences in the physical properties observed among the mutant lines.