Fig. 4
Photosynthesis-related parameters measurement. 5-week-old transgenic and wild type plants grown under normal conditions were treated with 5% PEG-6000 for 1 day. Parameters were recorded by photosynthetic system instrument at the same position of each plant. a: Photosynthetic rate of single leaf from WT, B1 and K2 plants; b: Intercellular CO2 content of single leaf from WT, B1 and K2 plants; c: Stomatal conductance of single leaf from WT, B1 and K2 plants; d: Transpiration rate of single leaf from WT, B1 and K2 plants; e: Water use efficiency of single leaf from WT, B1 and K2 plants. Error bars indicate ±SD, *P < 0.05