Effects of Different Selenium Concentrations on Photosynthetic Physiology of Grape Seedlings

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Chen, Hongqiang^1 ; Liu, Lei^2 ; Lin, Lijin^1 ; Liao, Ming'An^2 ; Lv, Xiulan^1

Institute of Pomology and Olericulture, Sichuan Agricultural University, Chengdu, Sichuan

611130, China^1

College of Horticulture, Sichuan Agricultural University, Chengdu, Sichuan

611130, China^2

关键词: Chlorophyll contents;    CO2 concentration;    Hydroponic experiments;    Net photosynthetic rate;    Selenium concentrations;    Stomatal conductance;    Total chlorophyll;    Transpiration rates;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042062/pdf
DOI  :  10.1088/1755-1315/310/4/042062

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A hydroponic experiment was conducted to study the effects of different concentrations of selenium (0.00, 0.05, 0.10, 0.25, 0.50, 1.00, 2.00 mg/L) on photosynthetic physiology of grape seedlings. The result showed that the selenium concentration of 0.05 mg/L could significantly improve the chlorophyll a, chlorophyll b, carotenoid and total chlorophyll of grape seedlings, while the chlorophyll content reduced significantly when the concentration was 1.00 mg/L and 2.00 mg/L. Besides, the net photosynthetic rate (Pn), stomatal conductance (Gs), CO2 concentration of intercellular (Ci) and transpiration rate (Tr) of grape seedlings all significantly increased at 0.05 mg/L, while the Pn, Gs, Ci and Tr of grape seedlings reduced significantly when the concentration was 1.00 mg/L and 2.00 mg/L. Therefore, the selenium concentration of 0.05 mg/L concentration was beneficial to photosynthesis.