Table 6: Relative contribution (partial and model ), value, and probability in predicting wheat grain yield by the stepwise procedure analysis under inoculation condition and different water levels.

StepVariables
entered
Variable
removed
Partial
Model
value
ER
Parameter
estimate
Standard
error
value

1 0.99570.9957<.00010.951040.01458<.0001
2 0.00120.99690.0009−0.999260.271700.0009
3 0.00030.99720.08090.013320.005490.0212
4 0.00030.99750.0445−0.004720.002250.0445

X4: spike weight/plant, X5: grains/spike, X6: grain weight/spike and X8: total chlorophyll content of flag leaf.
: coefficient of determination, value ER: value for entered or removed variables, and value : value for final model.