Figure 6 Effects of growth temperature, water regime and heatwave on vegetative dry mass (i.e. leaves, stems and branches; panel a, b), fruit dry mass (i.e. lint and bract; panel c, d) and total dry mass (panel e, f) of cotton plants at harvest at the end of the experiment. Bars indicate mean value for each treatment combination and error bars represent standard error of mean (n=5). Thermal regimes characterized by different daytime temperature (i.e. 32/22oC and 32/26oC) are indicated by hatched bars.
Table 1 Results of Two-way ANOVA showing the main and interactive effects of growth temperature (Temp) and water deficit stress (Water) on physiological variables and biomass productivity of cotton plants. Significant effect is considered when P≤0.05 and is displayed in bold. Variables presented in the table are physiological parameters of net photosynthetic rate (Asat, µmol m-2s-1), stomatal conductance (gs, mol m-2 s-1), dark respiration rate (Rn, µmol m-2 s-1), the ratio of intercellular to atmospheric CO2(Ci/Ca) and leaf level carbon balance (Asat-Rn, µmol m-2s-1), and growth parameters of days required for plant height to reach 50% of its maximum (H50, day), and dry mass (g plant-1) for vegetative (leaves, stems and branches), fruit (lint and bract) and the total aboveground portion of the plant. Definitions, abbreviations and units also apply to other tables unless otherwise stated.