Abstract: Based on the study of the induction of test-tube lily bulb， the efficient and steady system of the induction of lily bulb in tube was established. By using the lily bulb as the explants， the experiment analyzed the effect of different factors on induction of lily bulb in tube. The results indicated that the basic medium of MS， 1/2MS， B5 and N6 could induce the formation of the bulb， among which MS could induce a larger number， and was more beneficial for the formation of bulb induction than the others. Experiments also showed that inner bulbs had the highest induction rate among all different parts of the bulb as explants. The highest induction rate of bulb reached 78% in the medium containing 0.5 mg·L-1 NAA and 1.0 mg·L-1 6-BA. Meanwhile， the induction rate was influenced by culture time， sugar sources and concentrations. The induction rate increased with the prolonging of culture time， and the highest induction rate was achieved in the treatment with addition of 30 g·L-1 sucrose.

Key words: lily, bulblet, induction