关键词: 盐碱地, 宁夏枸杞, 蛋白质代谢, RAPD分析, 适应

Abstract: The physiological features of Lycium barbarum, growing in different saline habits by its origin, primary or secondary, were compared and analyzed in this paper. The results show that the impact of secondary saline habitat on Lycium barbarum is stronger than that of primary saline habitat; the amount of photosynthetic pigment, proline, protein and nucleic acid in the leaves of the plants lived in secondary saline habitat is larger than that of living in primary saline habitats but varies in juvenile and adult plants. The experiment of electrophoresis of soluble protein gel indicated that the number and coloring of the spectrum belts of uneven-aged Lycium barbarum planted in same sites are similar, while two belts with distinctly different color appear in the spectrum of the plants situated in different environment. The changes of the content levels of photosynthetic pigment, proline and the protein metabolism may imply an adaptive response of the plants, which favors the resisting of plants to salt stress. RAPD analysis showed that DNA variation, which followed metabolism modification in the plant, occurred to be adapted to the salt environment with the growth and development of Lycium barbarum.

Key words: saline habitat, Lycium barbarrum, protein metabolism, RAPD analysis, adaptation