The changes of the protective enzyme activity in roots and cotyledons were compared between two different salt tolerance cotton cultivars (Salt-tolerant cultivar zhimiah 3 and non-tolerant cultivar Lumian 1024). The results showed that both POD and SOD activities in roots of two cultivars raised under salt stress, and declined in cotyledons of two cultivars;At primary stage of salt stress, the higher POD. SOD activity could be maintained in roots of Zhimian 3 than Lumain 1024. However, at the late stage of ...
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