Author(s)

Siwen Bian, Xiuping Tian, Qiu Zhao, Chunyang Xiang and Yan Chuai

Corresponding Author

Xiuping Tian

Abstract

Abstract: Salt stress is one of the important factors influence the quality and yield of waxy maize. Taking Jinnuo 72 as the research material, the seeds were treated with trehalose solution of 1 mmol·L-1. The pot experiment was carried out to set five levels of soil with salt content of 0.04%, 0.20%, 0.35%, 0.52% and 0.68%. The photosynthetic characteristics were determined of waxy maize seedlings. The results showed that the net photosynthetic rate could be significantly increase by exogenous trehalose treatment of waxy maize seedlings. The transpiration rate, stomatal conductance and chlorophyll content could be significantly increase by exogenous trehalose of waxy maize seedlings at 0.20% and 0.35% salt concentration. The intercellular CO2 concentration could be significantly reduced by exogenous trehalose treatment of waxy maize seedings at 0.35% salt concentration. The nitrogen content could be significantly increase by exogenous trehalose treatment of waxy maize seedlings at 0.04%, 0.20% and 0.35% salt concentration. The photosynthetic characteristics could be change by exogenous trehalose of waxy maize seedlings under salt stress, thus, the photosynthetic, nitrogen and chlorophyll contents were improved of seedlings under salt stress. Salt tolerance could be improved by using trehalose treated waxy maize seeds and seedlings.

Keywords

Keywords: Trehalose Treatment, Salt Stress, Waxy Maize Seedlings, Physiological Characteristics