Study on Effect of PP333 on in vitro Rapid Propagation of Hydrangea macrophylla

Added PP333 at different concentrations to proliferative medium and rooting medium when the test tube seedlings of Hydrangea macrophylla were cultured. The medium for proliferation is Ms 6-BA2.0mg/ L IBA0.5mg/L. The medium for rooting is 1/2 MS IBA 0.1mg/L. The results showed that 0.1-0.5 mg/L PP333 improved the proliferation and rejuvenation of the tube-plantlets of the Hydrangea macrophylla, and that 0.05-0.5mg/L PP333 in the medium for rooting improved rooting and transplantation. Among them 1/2 MS IBA 0.1mg/L PP3330.1mg/L was most effective.