[Effects of drought stress on leaf gas exchange and chlorophyll fluorescence of Salvia miltiorrhiza].

Taking the seedlings of Salvia miltiorrhiza cv. Sativa (SA) and S. miltiorrhiza cv.

[Tissue culture and rapid propagation of Phytolacca americana].

Objective: To explore the technique of rapid propagation for Phytolacca americana.

Methods: Aseptic seedling were used as explants.

Results: The best explants were the stems from strong aseptic seedling.