Fig. 7.

Stomata traits from the upper (adaxial) side of the mid‐region of the flag leaf for the FLL5A near‐isogenic line (NIL) pair grown in field trials NIAB 2021 and NIAB 2022. For NIAB 2021, flag leaves were sampled of mean size for each NIL line (FLL5A+ = 17.0 cm; FLL5A− = 15.8 cm). For NIAB 2022, flag leaves of equal size were sampled from both FLL5A+ and FLL5A− (11.3 ± 0.3 cm). Significant differences between each NIL line within a trial are indicated as *, P < 0.05; **, P < 0.01; ***, P < 0.001, as assessed by one‐way ANOVA. Also indicated within each panel are P‐values for interallelic (A), inter‐trial (T) and allele × trial interaction (A × T), as assessed by two‐way ANOVA. For box plots, the horizontal lines denote the median, boxes indicate the lower (25%) and upper (75%) quartiles, whiskers indicate the ranges of the minimum and maximum values, and dots predicted outliers. (a) Stomatal density, (b) guard cell length, (c) stomatal rows, (d) stomata per row, (e) G _smax (maximum stomatal conductance per unit leaf area).