Table 9: Eigenvectors and eigenvalues of the first four principal components.

Variable Eigenvectors PC 1 PC 2 PC 3 PC 4 Eigenvalue 4.37 2.14 1.53 1.14 Variation (%) 36.4 17.9 12.8 9.6 Cumulative (%) 36.4 54.5 67.1 76.7 PH 0.388 −0.227 −0.004 −0.081 DF 0.416 −0.179 0.076 0.167 DM 0.394 −0.140 0.093 0.115 FLR 0.317 −0.122 0.206 0.399 NT 0.227 0.541 0.269 −0.014 NG 0.180 −0.353 0.114 −0.473 1000 GW 0.152 0.007 −0.454 −0.288 YP 0.266 0.228 0.042 −0.591 NP 0.224 0.549 0.259 −0.017 PL 0.306 −0.135 0.008 0.197 SP −0.141 −0.303 0.607 −0.303 SF 0.281 0.038 −0.463 −0.071

PH: plant height, DF: days to flowering, DM: days to maturing, FLR: flag leaf length to width ratio, NT: number of tillers per hill NG: number of grains per panicle, 1000 GW: one thousand grain weight, YP: yield per pot, NP: number of panicles per hill, PL: panicle length, SP: spikelet per panicle, and SF: spikelet fertility, and PC: principal components.