期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：5
页码：052011
DOI：10.1088/1755-1315/199/5/052011
语种：English
出版社：IOP Publishing
摘要：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 photosynthetic pigments and photosynthetic characteristics of lettuce seedlings under salt stress was studied. The results showed that when the concentration of abscisic acid was lower than 10 μmol L-1, the chlorophyll content, carotenoid content, net photosynthetic rate, stomatal conductance, and transpiration rate in leaves of lettuce seedlings were all increased along with increasing of abscisic acid concentration. When the concentration of abscisic acid was higher than 10 μmol L-1, all indicators decreased. But the opposite trend of intercellular carbon dioxide was presented. Therefore, spraying abscisic acid could increase the resistance of lettuce under salt stress, and the best abscisic acid concentration for lettuce against salt stress was 10 μmol L-1.
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