. 2020 Sep 24;10:15642. doi: 10.1038/s41598-020-72507-4

Table 5.

SPAD index, nitrogen content, chlorophyll a (Chl a), chlorophyll b (Chl b), total chlorophyll and carotenoids of tomato plants of the industrial variety UCO 14.

Treatments	SPAD index^†	Nitrogen (mg plant⁻¹)^†	Chl a (μg cm⁻² leaf)^†	Chl b (μg cm⁻² leaf)^†	Total Chl (μg cm⁻² leaf)^†	Carotenoids (μg cm⁻² leaf)^†
Control	36.79 ± 0.53^b	1.42 ± 0.02^c	3.76 ± 0.27^b	1.24 ± 0.09^b	4.99 ± 0.36^b	0.73 ± 0.04 ^b
Fertilized	41.64 ± 0.30^a	3.36 ± 0.24^a	5.02 ± 0.41^a	1.62 ± 0.11^a	6.64 ± 0.52^a	0.95 ± 0.06 ^a
64S1	42.02 ± 0.48^a	2.32 ± 0.06^b	5.05 ± 0.20^a	1.58 ± 0.06^a	6.62 ± 0.26^a	0.93 ± 0.03 ^a
42P4	41.65 ± 0.28^a	2.57 ± 0.11^b	4.78 ± 0.02^a	1.52 ± 0.03^a	6.32 ± 0.16^a	0.90 ± 0.02 ^a
60I1	42.06 ± 0.36^a	2.15 ± 0.20^b	4.80 ± 0.29^a	1.51 ± 0.07^a	6.31 ± 0.36^a	0.90 ± 0.03^a
53F	41.61 ± 0.42^a	2.25 ± 0.03^b	4.86 ± 0.31^a	1.54 ± 0.10^a	6.41 ± 0.41^a	0.91 ± 0.04^a

^†Values are means ± SE (n = 6). Statistical comparisons are among treatments within a single column. The different letters indicate significant differences according to LSD Fisher test (P < 0.05).