Table 5: The regression coefficient ( ), standard error (SE), value, and probability of the estimated variables in predicting wheat grain yield by the multiple linear regression analysis under inoculation (In) and noninoculation (non-In) conditions and different water levels.

PredictorDF SE

ConstantIn10.53940.491801.100.284
Non-In1−0.08930.20870−0.430.672
X1In1−0.11640.08245−1.410.171
Non-In1−0.00610.04145−0.150.884
X2In1−0.02020.05014−0.400.691
Non-In1−0.01030.02030−0.510.618
X3In1−0.00820.02037−0.400.693
Non-In10.00320.014770.220.830
X4In10.96170.0192749.900.001
Non-In10.97800.0104193.960.001
X5In10.01100.006991.560.131
Non-In10.01200.003893.070.005
X6In1−0.78020.34490−2.260.033
Non-In1−1.51390.24110−6.280.001
X7In1−0.00700.00979−0.710.483
Non-In1−0.00450.00538−0.840.411
X8In1−0.00420.00318−1.330.196
Non-In1−0.00320.00196−1.610.120
X9In10.01310.011651.120.273
Non-In1−0.01090.00541−2.010.056
X10In10.08400.092460.910.373
Non-In10.11950.054022.210.037
X11In1−0.00080.00318−0.250.803
Non-In10.00490.001772.740.011

X1: tiller numbers/plant, X2: spike length, X3: spikelets/spike, X4: spike weight/plant, X5: grains/spike, X6: grain weight/spike, X7: 100-grain weight, X8: total chlorophyll content of flag leaf, X9: biological yield/plant, X10: root weight, and X11: leaves area.