Abstract: The rapid multiplication system of Cymbidium goeringii‘Lüyun’with verge line pattern leaves by protocorm like-body was established. Effects of plant growth regulators on multiplication and differentiation of rhizomes were studied. 1 /2MS solid medium was suitable for subculture and preservation of the rhizome. The optimal medium for multiplication and growth of rhizomes was MS + 6-BA 1.0 mg·L ^{- 1}. IBA was more effective to the growth of rhizomes than NAA with increasing of auxin concentration (0 - 3 mg·L ^{- 1} ).The optimum medium for differentiation of rhizomes was 1/2 MS supplemented with 6-BA 1.0 mg·L ^{- 1} and IBA 1.0 mg·L ^{- 1} , which regeneration rate of shoots was as high as 36.9%. Dasheen paste was better to the multiplication of rhizomes than coconut milk and banana mud added to the culture medium. Single conglomeration with 3 - 5 rhizomes was optimum by the way of broking off with fingers and thumb. Verge line pattern on the leaf could be stably inherited.

Key words: Cymbidium goeringii, Verge line pattern, Protocorm like-body, Rhizome, 6-BA, IBA