Crossing Yids, a rice with short day low temperature induced male sterile(SDLTR), withsome indica rice varieties as male parent, the F1s were all purple color no matter how the leaf edge colorof male parent was. This trait was very useful to distinguish false hybrid rice from true hybrid rice.Through preliminary genetical analyses, the results showed: 1) The genetic pattern of leaf edge color fitin with dominance-complementary effect controlled by two pairs of genes. 2) The leaf edge color of F1swere different with different indica rice as male parent. 3) If crossing Yids with japonica rice as maleparent, the leaf edge color of F1s were green, its reason should be studied further.