Table 1 Summary of principal components analyses
NC populationsNC F2Norway F2
PC1 standard deviationa1.6101.5241.494
  • a Square root of PC1 eigenvalue, from the prcomp package in R.

  • b Abbreviations: SpD, spring diameter; RS, reproductive shoots; SilS, siliques per shoot; SdSil, seeds per silique; SdMass, seed mass; and dDr, net reproductive season diameter growth.

  • c Seed mass was not measured in Norway. The principal components analysis for Norway data included only the remaining five traits.