Please note: Wiley Blackwell are not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing material) should be directed to the New Phytologist Central Office.

nph12490-sup-0001-TableS1-S5.docWord document93K

Table S1 Mean trait values in the presence and absence of competitors in each CO2 environment

Table S2 Results from ANOVA testing the effects of CO2, the presence of competitors and plant genotype (RIL) on trait values

Table S3 Additive genetic variance–covariance matrices (G) for fitness (fruit number), plus the three focal traits (flowering date, rosette diameter and aboveground biomass) in each of the four competition × CO2 treatments

Table S4 Estimated broad-sense heritabilities (H2 = Vg/Vp) for each trait in each environment

Table S5 Estimated directional (β) and nonlinear (γ) selection gradients in each environment and results from ANCOVA testing for differences in β across environments