Table 7.
Direct (diagonal) and indirect effects of the yield related traits on grain yield of genotypes evaluated during seasons MS2019 and OS2020 at KALRO Njoro.
| Trait | DH | PH | SL | SS | KS | TKW | BM | Correlation with GY | VIF |
|---|---|---|---|---|---|---|---|---|---|
| DH | − 0.13258 | − 0.00747 | − 0.00324 | 0.00071 | − 0.01940 | − 0.19573 | 0.05403 | − 0.30368*** | 1.40523 |
| PH | − 0.03695 | − 0.02680 | − 0.01881 | 0.00346 | 0.03214 | − 0.04506 | 0.23455 | 0.14256 | 1.87812 |
| SL | − 0.00617 | − 0.00724 | − 0.06956 | 0.00650 | 0.03448 | − 0.10440 | − 0.01415 | − 0.16052* | 1.27615 |
| SS | − 0.00411 | − 0.00405 | − 0.01974 | 0.02293 | 0.02615 | − 0.03448 | − 0.01370 | − 0.02707 | 1.12639 |
| KS | 0.01901 | − 0.00637 | − 0.01774 | 0.00443 | 0.13534 | 0.09019 | 0.11776 | 0.34263*** | 1.25284 |
| TKW | 0.05165 | 0.00240 | 0.01446 | − 0.00157 | 0.02428 | 0.50249 | 0.19805 | 0.79174*** | 1.93316 |
| BM | − 0.01606 | − 0.01409 | 0.00221 | − 0.00071 | 0.03571 | 0.22304 | 0.44619 | 0.67629*** | 2.31553 |
DH days to 50% heading, PH plant height, SL spike length, SS number of spikelets spike−1, KS number of kernels spike−1, TKW thousand kernel weight, BM biomass, GY grain yield, VIF variance inflation factor; ***, ** and * = significance at p < 0.001, p < 0.01 and p < 0.05, respectively.