Author(s)

Kaiyue Bei, Chunyang Xiang, Qiu Zhao and Jin Du

Corresponding Author

Chunyang Xiang

Abstract

Abstract: The effects of salicylic acid treatment on photosynthetic characteristics of orychophragmus violaceus seedlings were studied under different salt stress. The results showed that the content of nitrogen and chlorophyll, net photosynthetic rate, transpiration rate and stomatal conductance were significantly reduced in orychophragmus violaceus seedlings under salt stress. The intercellular carbon dioxide concentration was increased under salt stress. Under salt concentration of 0.03%, 0.20%, 0.35% and 0.50%, net photosynthetic rate of seedlings treated with salicylic acid were increased by 17.29%, 13.37%, 21.34% and 21.48% respectively compared with those without SA. The stomatal conductance and transpiration rate were increased with salicylic acid treatment under salt stress, and the intercellular carbon dioxide concentration was significantly reduced with salicylic acid treatment under certain salt stress degree. The content of nitrogen and chlorophyll could be significantly increased by salicylic acid treatment under low salt stress. Exogenous SA could change the photosynthetic characteristics and increase the salt tolerance of the orychophragmus violaceus seedlings under salt stress.

Keywords

Keywords: Salt Stress; Orychophragmus Violaceus; Seedlings; Photosynthetic Characteristics; Chlorophyll Content