The Physiological Response of Three <i>Narcissus pseudonarcissus</i> under NaCl Stress
- 1 Shandong Institute of Pomology, Taian, China
- 2 Shandong Institute of Pomology, Taian, China
- 3 Shandong Institute of Pomology, Taian, China
Abstract
In order to explore the salt-tolerance of Narcissus pseudonarcissus and enrich its cultivation and application forms. In this experiment, “Manly”, “Dutch” and “Wilden” daffodils were used as test materials. NaCl stress was applied at different concentrations, and the corresponding physiological indexes were measured at three time nodes: bolting stage, early flowering stage and blooming stage. The results showed that all three showed some resistance under low concentration salt stress, in which, SOD, POD enzyme activity, chlorophyll proline and soluble sugar content increased, while MDA content decreased . The physiological metabolism of the three was disturbed under high concentration of salt stress, in which, SOD, POD enzyme activity and chlorophyll content decreased, while MDA, proline a nd soluble sugar content increased. With the extension of stress time, the injury was gradually deepened and the salt tolerance of the three varieties is “ Dutch ” , “Wilden” and “Manly” in order.
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