Research Article

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

Figure 5

Variations in leaf gas exchange parameters of winter wheat under well-watered control treatment (T1), light drought (T8), moderate drought (T9), and severe drought (T10) stress at the heading stage. 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 ().