Effects of Spraying Abscisic Acid on Growth and Antioxidant Enzyme of Lettuce Seedlings under Salt Stress
Year: 2018
Type: conference-paper
Abstract: The glass lettuce was made as material, the effect of different concentrations (0, 1, 5, 10, 20 μmol-L −1 ) of exogenous abscisic acid on growth, antioxidase activity and osmotica of lettuce seedlings under salt stress was studied. The results showed that the root length, stem diameter, and dry fresh weight of lettuce sprayed with abscisic acid were higher than those of the control. Within a certain concentration range, the activities of antioxidant enzymes POD, SOD and CAT increased with the increase of abscisic acid concentration. The soluble protein content increased but the MDA content decreased, which maintained the balance of intracellular reactive oxygen metabolism and prevented membrane lipid peroxidation. Therefore, spraying the exogenous abscisic acid could increase the resistance of lettuce to salt stress, and the best effect was obtained when the concentration was 10μmol·L −1 .
Authors: Yongdong Xie, Guochao Sun, Liming Wang, Yi Tang
Institution: Sichuan Agricultural University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2904976949