Effects of Fulvic Acid on Photosynthetic Characteristics of Citrus Seedlings Under Drought Stress. Issue 3 (April 2020)

• Record Type: Journal Article
• Authors: Huang, Shengjia; Xiong, Bo; Sun, Guochao; He, Siya; Liao, Ling; Wang, Jiaqi; Wang, Bozhi; Wang, Zhihui
• Is Part Of: IOP conference series. Volume 474:Issue 3(2020)
• Publication Date: 2020-04
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/474/3/032007
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The experimental material in the experiment was citrus seedling of Huangguogan. An experiment was conducted to study the effects of fulvic acid on photosynthetic characteristics of citrus seedlings under drought stress. Portable photosynthesis meter (L1-6400) was used to determine net photosynthetic rate and chlorophyll fluorescence. The results showed that the P n in citrus seedlings spraying with 200, 400, 600 mg ·L -1 fulvic acid was higher than that in control group, which increased with the increase of concentration of fulvic acid. With the increase of fulvic acid concentration, the F o, F m, F v, q P, F v '/ F m ' in PSII and NPQ in citrus seedlings all increased significantly, while the F o /F v in PSII showed an opposite regulation pattern.