Table 2 Optimum temperature (Topt) and light saturated photosynthetic rate at Topt(Aopt) of cotton plants across temperature (Temp) and water deficit (Water) treatments. Data are shown as mean ± standard error of mean (n=6). Also given are the P-values of two-way ANOVA showing the main and interactive effects of temperature and water availability on two parameters, with significant effects displayed in bold. Numbers differ in superscripts within the same column indicate statistical difference at P ≤0.05 level.