盐生和非盐生植物对混合盐碱胁迫的生理生化指标的响应

Reseach on Physiological and Biochemical Index Reponse of Halophytes and Non-Salt Plants under Mixed Saline-alkali Stress

利用SOD活性增强物质,研究了人工调控下盐生和非盐生植物对混合盐碱胁迫的形态响应特点,同时探讨了SOD活性增强物质对植物抗盐性的影响。结果表明:SOD活性增强物质对盐生植物和非盐生植物的生理生化指标影响有明显改善作用,并且对盐生植物的作用更显著,高浓度混合盐碱条件下相对电导率降低了21%;2种盐生植物的SOD活性分别增大到28 U/g和37 U/g;而藜的叶片叶绿素含量达到19.7 mg/g,接近对照水平,这与盐生植物常具有较高的SOD活性使得植物盐害得到有效修复有关。

Using SOD activity materials, morphological response characteristics of artificially regulated halophytes and non-salt plants under mixed saline-alkali stress were studied. At the same time, the effect of SOD activity increased substance on plant salt resistance was also discussed. Halophyte Chenopodium quinoa are Chenopodium album L. and Kochia sieversiana （Pallas） C.A. Mey. Non-salt plants are Am- brosia artemisiifolia L. and Ambrosia trifida L. The results showed that SOD activity increased substance could obviously improve the physical and biochemical indexes of halophytes and non-salt plants, and the effect on halophytes was more remarkable. Relative conductivity under high-concentration mixed saline and alkali decreased by 21%, SOD activity of two halophytes increased to 28 U/g and 37 U/g respec- tively. Leaf chlorophyll content of Chenopodium album reached 19.7 rag/g, close to that of the control. Halophytes often have higher SOD activity, which may effectively recover the damage of salinization.