Fig. 4.

Effect of mutations in VRN-B2 and VRN-D2 on heading time under non vernalizing conditions. a Heading times for the triple mutant. Bars represent mean and error bars represent the SEM. Dashes represent mutant alleles, wt: wild type alleles and H: heterozygous. Lower doses of functional VRN2 were enough to significantly delay flowering. **P < 0.005 ***P < 0.001. Arrow indicates that the experiment was stopped before heading. b Maturity differences between the triple VRN2 mutant (left) and the wild type (right)