Table 4 Identifying important biophysical parameters for characterizing and screening wheat genotypes at different days after sowing through Eigen values and factor loading in rotated component matrix under salinity stress condition.

From: Characterizing and screening of wheat genotypes under salinity stress condition using thermography and multivariate techniques

PCs	Eigenvalue	% Variance	Cumulative Variance	LAI	NDVI	Pn	IG	Transpiration	OP	RWC	Total_Chl	MSI	Na	K
				Stage 1, 25 DAS
PC1	3.90	35.46	35.46	0.68	0.70	0.07	0.84	0.95	0.74	0.15	0.31	0.22	0.60	−0.004
PC2	1.87	16.96	52.42	0.25	0.43	−0.82	−0.34	−0.05	0.32	0.22	0.33	0.68	−0.34	−0.02
PC3	1.46	13.26	65.68	−0.10	0.13	0.26	0.19	0.06	0.01	−0.83	0.76	0.18	−0.24	−0.02
PC4	1.12	10.15	75.83	−0.04	0.14	0.30	0.03	0.09	0.02	0.13	0.20	0.21	0.47	−0.95
Stage 2, 52 DAS
PC1	3.57	32.48	32.48	0.75	0.32	−0.02	0.64	0.89	0.87	−0.03	0.74	−0.37	0.33	−0.29
PC2	2.43	22.05	54.53	−0.43	−0.81	0.79	0.48	0.32	−0.08	−0.09	−0.06	−0.10	0.72	−0.31
PC3	1.21	10.99	65.52	0.01	0.02	−0.05	0.18	0.16	0.10	−0.01	−0.23	−0.69	−0.13	0.77
PC4	1.06	9.60	75.11	−0.15	−0.08	−0.07	0.23	0.03	0.02	0.98	−0.09	−0.08	−0.16	−0.10
Stage 3, 69 DAS
PC1	5.17	46.97	46.97	0.38	−0.57	0.13	0.84	0.91	0.74	0.03	0.71	−0.69	0.32	−0.14
PC2	1.41	12.79	59.76	−0.22	−0.58	0.82	0.33	0.32	0.15	−0.37	0.28	−0.09	0.80	−0.59
PC3	1.18	10.69	70.44	0.58	−0.03	0.28	−0.11	0.08	0.47	−0.82	0.48	−0.16	−0.09	−0.09
Stage 4, 90 DAS
PC1	3.926	35.691	35.691	−0.45	0.12	−0.06	−0.06	0.39	0.18	−0.93	−0.67	0.17	0.85	0.88
PC2	2.060	18.726	54.417	0.28	0.42	0.15	0.02	0.79	0.19	−0.01	−0.21	0.75	0.39	0.38
PC3	1.360	12.367	66.784	−0.58	0.01	0.48	0.90	0.19	−0.19	−0.07	0.41	−0.28	0.04	0.08
PC4	1.073	9.758	76.542	−0.10	−0.69	0.75	−0.06	0.13	0.72	−0.10	0.22	−0.03	0.04	0.00
Stage 5, 118 DAS
PC1	4.87	44.27	44.27	−0.38	0.11	0.72	0.74	0.74	0.09	0.86	0.88	−0.12	0.80	−0.41
PC2	1.60	14.50	58.77	0.00	0.77	0.52	0.50	−0.39	0.83	0.17	0.13	−0.12	0.34	−0.33
PC3	1.28	11.63	70.40	0.07	−0.29	0.19	0.20	0.11	0.24	0.05	0.05	0.89	−0.02	−0.59

e.g., bold values indicate the highest os the second factor loading value for a particular parameter at corresponding PC in different stage.

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Table 4 Identifying important biophysical parameters for characterizing and screening wheat genotypes at different days after sowing through Eigen values and factor loading in rotated component matrix under salinity stress condition.

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