Figure 1.

Median, quartiles, and outliers by treatment for reproductive traits after field crosses between Crepis atribarba and C. barbigera. Tukey's test results are shown as letters above box plots. (A) Proportion of filled seeds. Diploid x diploid treatment (DxD; n = 31, $\overline{X}$ =0.38 ± 0.10), diploid x polyploid treatment (DxP; n = 30, $\overline{X}$ =0.48 ± 0.11), open treatment (O; n = 30, $\overline{X}$ =0.64 ± 0.12). (B) Average log weight per filled achene (mg). DxD n = 24, $\overline{X}$ = 0.58 ± 0.14 mg; DxP n = 26, $\overline{X}$ = 0.66 ± 0.14 mg; O n = 27, $\overline{X}$ = 0.60 ± 0.13 mg.