Abstract: To study the factors that affect the survival of Saintpantia ionantha’s cutting, and to provide the basis for its cutting production in the future. Taking the leaves of Saintpantia ionantha as materials, the single factor cutting experiments of 4 kinds of different substrates, 3 kinds of plant growth regulators and 2 kinds of plant growth regulators with different concentrations were carried out to analyze the effects of substrates, types and concentrations of plant growth regulators on rooting rate, sprouting rate and number of new buds, and to select the best cutting substrates and concentrations of plant growth regulators. The results showed that the rooting rate, sprouting rate and number of new shoots were the highest when the volume ratio of peat, perlite and river sand was 2∶2∶1, which were 98.00%, 25.82% and 19.00, respectively. It was the best cutting medium. The effects of different plant growth regulators vary with species, among which IBA and NAA can significantly improve the survival effect. The concentration of IBA and NAA in the range of 100~400 mg/L had no significant effect on the rooting rate, but had significant effect on the sprouting rate and the number of new buds. The best concentration of IBA and NAA in cutting propagation was 200 mg/L.

Key words: Saintpantia ionantha, substrate, plant growth regulator, cuttage