Fig. 1

The growth of S. miltiorrhiza at different stages. (a) Root development of transplantable tissue culture seedlings; (b) The tissue culture seedlings are exposed to the air to adapt to the environment; (c) Part of the tissue culture seedlings would be transplanted; (d) Placement of some potted plants in the greenhouse; (e) Growth of S. miltiorrhiza in ten weeks after transplanting; (f) Growth of S. miltiorrhiza in twenty-two weeks after transplantation