volutionary gains.
In addition to phase change, plastochron length is affected in
late flowering atspl9atspl15 double mutants, suggesting dissociation between growth and development (Figure 3) (Schwarz et al.,
2008). To date,this is the only clade of genes for which a role in plastochron length has been described (Figure 3). The atspl9atspl15
double mutant has a shortened plastochron relative to wild type,
which is correlated with a smaller shoot apical meristem and
rounded leaves