Abstract:SUMMARYMost studies assume midday gas exchange measurements capture the leaf's daytime performance. However, stomatal conductance (gs) and photosynthesis (An) fluctuate diurnally due to endogenous and environmental rhythms, which can affect intrinsic water use efficiency (iWUE). Six Sorghum lines with contrasting stomatal anatomical traits were grown in environmentally controlled conditions, and leaf gas exchange was measured three times a day. Stomatal anatomy and kinetic responses to light transients were al… Show more
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