[Objective] To provide references for genetics and breeding of wax guard. [Method] The inheritance of fruit color of wax guard was studied by using two inbred line,P1 and P2,and its F1,F2,BC1,BC2. P1 was a dark green fruit inbred line,P2 was a yellow green fruit inbred line. [Result] All the fruit were dark green in two F1 generations. However,in their F2 generations,segregation of dark green and yellow green color appeared in a ratio of almost 3 to 1. For their backcrosses,all the BC1 showed dark green col...