Fig. 3.
Stomatal density, index and pore index of soybean (Glycine max) leaves and flowers developed under conditions of water deficit (WD) and heat stress (HS) combination. (a–c) Stomatal density (a), stomatal index (b), and stomatal pore index (c) of leaves from plants subjected to control (CT), HS, WD or WD + HS. (d–f) As (a–c) but for sepals from plants subjected to CT, HS, WD or WD + HS. All experiments were conducted with three biological repeats, each with 10 plants as technical repeats. Twenty microscopic fields from all parts of sepals or from the middle section of leaves (between the main veins) were measured for each plant. Results are shown as box‐and‐whisker plots with borders corresponding to the 25th and 75th percentiles of the data. Different letters denote significance at P < 0.05 (ANOVA followed by a Tukey's post hoc test).