Melatonin alleviates heat-induced damage of tomato seedlings by balancing redox homeostasis and modulating polyamine and nitric oxide biosynthesis

Table 1 Effects of melatonin on the morphology of heat stress exposed tomato seedlings

Treatments	Shoot fresh weight (g plant⁻¹)	Shoot dry weight (g plant^− 1)	Root fresh weight (g plant^− 1)	Root dry weight (g plant^− 1)
CK	8.65 ± 0.17a	0.88 ± 0.05a	2.30 ± 0.26b	0.16 ± 0.01ab
MT	8.90 ± 0.15a	0.91 ± 0.06a	4.17 ± 0.13a	0.21 ± 0.02a
HT	6.03 ± 0.18b	0.47 ± 0.02c	2.04 ± 0.15b	0.12 ± 0.05b
MT + HT	8.03 ± 0.16a	0.65 ± 0.03b	4.04 ± 0.21a	0.20 ± 0.02a

Data represent as a mean of standard deviation (SD) of three replications. Different letters indicate significant differences according to Tukey’s HSD test at P ≤ 0.05
CK: Control, MT: 100 μM melatonin, HT: High temperature (42 °C), MT + HT: 100 μM melatonin + high temperature (42 °C)

ISSN: 1471-2229