2Dimmitt M A. How plants cope with the desert dlimatesonorensis[ C]. 1997,17(1 ):58.
3Winter K,Wallace B J. Stocker G C, Roksandic Z.Crassulacid metabolism in Australian vascular epiphytes and some related sixties[ J] . Oecologia,1983,57:129 - 141.
4Lüttge U. The role of crassulacid metabolism (CAM) in the adaptation of plants to salinity[J]. New Phytologist, 1993,125:59- 71.
5Adams P, Nelson D E, Yamada S, et al. Growth and development of Mesembryantheumum crystallinum (Aizoaceae) [J]. New Phytologist, 138:171 - 190.
