. 2022 Nov 18;12(11):1922. doi: 10.3390/life12111922

Table 1.

Effect of melatonin treatment on the root parameters of Micro-Tom plants under drought stress.

	C	C+Mel	D	D+Mel
RN	35 ± 0.05 ^b	40 ± 0.03 ^a	16 ± 0.01 ^d	26 ± 0.04 ^c
RL (cm)	38 ± 0.02 ^b	44 ± 0.07 ^a	21 ± 0.06 ^d	32 ± 0.03 ^c
RV (cm³)	0.4 ± 0.001 ^b	0.49 ± 0.002 ^a	0.09 ± 0.003 ^d	0.25 ± 0.006 ^c
RSA (cm²)	45 ± 0.3 ^a	46 ± 0.4 ^a	10 ± 0.1 ^c	22 ± 0.2 ^b
RC	181 ± 0.9 ^a	179 ± 0.6 ^a	42 ± 0.4 ^c	90 ± 0.8 ^b
RT	699 ± 6 ^a	696 ± 8 ^a	189 ± 3 ^c	380 ± 9 ^b
RF	598 ± 4 ^a	596 ± 9 ^a	150 ± 2 ^c	390 ± 5 ^b
AD (mm)	0.5 ± 0.002 ^a	0.47 ± 0.006 ^a	0.12 ± 0.009 ^c	0.35 ± 0.003 ^b
PA (cm²)	13 ± 0.07 ^a	12 ± 0.02 ^a	4.2 ± 0.01 ^c	7 ± 0.04 ^b
RA (mg g⁻¹ FW)	35 ± 0.05 ^a	37 ± 0.09 ^a	14 ± 0.02 ^c	25 ± 0.01 ^b
FRW (g)	2.7 ± 0.001 ^b	3.2 ± 0.007 ^a	0.5 ± 0.003 ^d	1.52 ± 0.004 ^c
DRW (g)	0.29 ± 0.002 ^b	0.36 ± 0.001 ^a	0.09 ± 0.06 ^d	0.18 ± 0.05 ^c

RN: root numbers; RL: root length; RSA: root surface area; RC: root crossings; RT: root tips; RF: root forks; AD: average diameter; PA: projected area; RA: root activity; FRW: fresh root weight; DRW: dry root weight. The values are the average of six replicates ± S.D (n = 6). Significant differences among different treatments in the experiment were determined by LSD 0.05 test and are indicated by different letters.