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:细胞间有限公司₂content 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