Research Article

Estimation of Leaf Water Use Efficiency Threshold Values for Water Stress in Winter Wheat (Triticum aestivum L.)

Figure 7

Variations in leaf gas exchange parameters of winter wheat under well-watered control treatment (T1), continuous moderate drought stress at seedling and jointing stages (T14), at jointing and heading stages (T15), and at heading and filling stages (T16), respectively. Data are the of three replicates, where for the photosynthetic rate (Pn), transpiration rate (Tr), intercellular CO2 concentration (Ci), and stomatal conductance (Gs). Different letters above the bars indicate statistical significance ().