Fig. 1
Effect of temperature regimes [optimal temperature (OT: 24/14 °C) and high temperature (HT: 32/22 °C)] on leaf physiological traits. a and b chlorophyll index (SPAD units), c and d minimum fluorescence yield (Fo; relative units), e and f maximum fluorescence yield (Fm; relative units), g and h thylakoid membrane damage (Fo/Fm ratio; relative units), i and j stomatal conductance (mol m− 2 s− 1), and k and l photosynthetic rate (μmol m− 2 s− 1) during anthesis (experiment I) and grain filling (experiment II) stage, respectively. Values shown are LSMEAN ± standard error of LSMEAN [n = 36; 3 replications × 6 days of measurement (0, 2, 4, 6, 8, and 12 days after treatment imposition) x repeat of the experiment I and II (2)]. LSMEANS estimates with same letter are not significantly different at P ≤ 0.05