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

VariableEigenvectors
PC 1PC 2PC 3PC 4

Eigenvalue4.372.141.531.14
Variation (%)36.417.912.8 9.6
Cumulative (%)36.454.567.176.7
PH0.388−0.227−0.004−0.081
DF0.416−0.1790.0760.167
DM0.394−0.1400.0930.115
FLR0.317−0.1220.2060.399
NT0.2270.5410.269−0.014
NG0.180−0.3530.114−0.473
1000 GW0.1520.007−0.454−0.288
YP0.2660.2280.042−0.591
NP0.2240.5490.259−0.017
PL0.306−0.1350.0080.197
SP−0.141−0.3030.607−0.303
SF0.2810.038−0.463−0.071

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.