Table 6 Eigenvectors of the first two principal components (PC1 and PC2) axis as observed in yellow maize testcrosses for each tester across environments under Striga infested condition
Testers | ||||||
|---|---|---|---|---|---|---|
Traits | T1 | T2 | T3 | |||
PC1 | PC2 | PC1 | PC2 | PC1 | PC2 | |
Grain yield (kg/ha) | -0.31 | -0.30 | -0.41 | -0.23 | -0.41 | -0.11 |
Silking (days) | -0.31 | 0.42 | 0.44 | -0.15 | -0.01 | 0.51 |
Anthesis (days) | -0.31 | 0.39 | 0.44 | -0.19 | 0.01 | 0.49 |
Anthesis silking interval (days) | -0.19 | 0.42 | 0.05 | 0.19 | 0.03 | 0.35 |
Striga rating at 8 wk (1–9) | 0.36 | 0.24 | 0.09 | 0.21 | 0.41 | 0.01 |
Striga rating at 10 wk (1–9) | 0.39 | 0.18 | 0.18 | 0.42 | 0.44 | 0.00 |
Striga count at 8 wk (no.) | 0.43 | -0.02 | -0.12 | 0.53 | 0.35 | -0.29 |
Striga count at 10 wk (no.) | 0.38 | -0.06 | -0.05 | 0.52 | 0.34 | -0.25 |
Ear aspect (1–5) | 0.15 | 0.50 | 0.43 | -0.03 | 0.26 | 0.21 |
Plant height (cm) | -0.2 | -0.03 | -0.15 | -0.28 | 0.02 | 0.39 |
Ear per plant (no.) | -0.13 | -0.25 | -0.41 | -0.04 | -0.4 | -0.15 |
Proportion of variance accounted by | 36.9 | 24.33 | 34.04 | 21.4 | 35.0 | 31.0 |
Total variance | 61.3 | 55.4 | 66.0 | |||