Robustness of Tomato Quality Evaluation Using a Portable Vis-SWNIRS for Dry Matter and Colour

Table 2

Prediction statistics of hydroponic tomato fruit DM (729–975 nm) and colour (CIE ) (500–720 nm), based on interactance spectra.

Populations		DM				CIE
Calibration set	Prediction set	Bias		RMSEP	SDR	Bias		RMSEP	SDR
Pop 1	Pop 2	−0.26	0.84	0.86	2.32	−5.2	0.17	13.07	0.97
Pop 1-2	Pop 3	0.07	0.86	0.62	2.70	−2.7	0.73	8.87	1.82
Pop 1–3	Pop 4	−0.14	0.87	0.56	2.64	−0.48	0.85	5.00	2.5
Pop 1–4	Pop 5	0.03	0.92	0.53	3.56	−1.18	0.95	3.80	4.09
Pop 1–5	N added	0.19	0.76	0.55	1.83	0.67	0.82	6.88	2.26
Pop 1–5	Salt added	−0.19	0.76	0.84	2.00	−0.29	0.95	4.13	4.45
Pop 1–5	Fruit removed	0.03	0.77	0.46	2.07	−0.08	0.95	3.02	5.18
Pop 1–5	Leaf removed	−0.03	0.88	0.51	2.88	0.11	0.86	6.01	2.72
Pop 1–5	Control	−0.18	0.83	0.49	2.29	−0.54	0.78	7.64	2.11