Fig.1 Leaf respiration rate based on leaf area (A) or dry matter (B) of hybrid 1, N22 and M202 exposed to control (white bars, CT) and increased (gray bars, INT) night temperature from 33 days after transplanting (field) or transplanting (GH2) to respiration measurements. Different lower-case letter indicate significant differences (P>0.05) between cultivars, and the symbol indicates significant difference (P>0.05) between temperature treatment according to the post-hoc testing of Tukey-HSD. Results of the two-way ANOVA for the factors cultivar (C) and temperature (T) are presented. Level of significant is expressed as *,**,***and ns for P