Fig. 5.

Post-anthesis source and sink parameters for biomass (M) versus average daily temperature of the period. (A–C) Temperature responses of total source supply (S_tot.so.M), days after anthesis when the source activity has decreased to zero (t_e.so.M), and mean source activity ($\overline{s}$_so.M) for biomass. (D–F) Temperature responses of total sink demand (S_tot.si.M), days after anthesis when the daily sink strength has decreased to zero (t_e.si.M), and mean sink strength ($\overline{s}$_si.M) for biomass. (G–I) Temperature responses of the difference between S_tot.so.M and S_tot.si.M, the ratio of S_tot.so.M to S_tot.si.M, and the contribution of remobilized pre-anthesis assimilates to final grain dry mass (RE for biomass). Lines are linear regression fitted to the data for the well-watered and high nitrogen supply regimes and are shown only when significant at P=0.05. *** indicates statistical significance at P<0.001. The shaded area depicts the 95% confidence interval of the predictions for the conditions well-watered and high nitrogen supply regimes. WW, well-watered; WD, water deficit; HN, non-limiting nitrogen; LN, low nitrogen supply; HS, heat shock.