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. 2015 Mar 27;10(3):e0121462. doi: 10.1371/journal.pone.0121462

Table 7. Summary of regression models for predicting grain yield of wheat infected by powdery mildew.

Model	2009–10 season					2010–11 season
Model	10.5.3 ^a	10.5.4	11.1	Mean ^b		10.5.3	10.5.4	11.1	Mean
Σdr _{680-760 nm}
R²	0.66	0.25	0.48	0.60		0.51	0.31	0.51	0.66
RMSE	260.94	375.39	319.80	286.60		415.06	488.27	415.16	354.13
PLSR
R²	0.67	0.32	0.58	0.69		0.52	0.68	0.64	0.68
RMSE	249.19	355.68	278.58	240.36		402.63	331.14	350.19	330.05

^aGrowth stage using Feekes scale.

^bMean spectral reflectance indices across three growth stages.