The second experiment as the first trial evaluation to obtain MV2 only used 12 accessions of MV1 indicated mutations occur at each dose level gamma ray irradiation (0 Gy, 10 Gy, 20 Gy, and 30 Gy). Each treatment was repeated four times and each replication consisted of one seed sett. Experimental design using randomized block design (RBD) with two groups (Robert and James, 1991). Observations were made until the time of harvest for 5 to 9 months. Indicators observations for mutant plants are: the shape and color of leaves, growth model, shape of bulbs, growth duration, stem diameter, number of tubers, tuber weight, and tuber length. The procedure of data analysis using the MINITAB 14 program (Nur and Septin, 2006).