| 1 | This is the first report of plant regeneration from the protoplast culture of an indica rice. | |
| 2 | The grain shape was long and large, as an intermediate between indica and japonica rice. | |
| 3 | The result showed the suitable concentration of phytohormone could promote the efficiency of indica rice tissue culture remarkably. | |
| 4 | Distance coefficient showed that the rice was in the transition stage from wild to indica rice. | |
| 5 | The single-origin model suggests that indica and japonica were both domesticated from the wild rice O. rufipogon. |