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 and 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.