Table 1 Test different treatments.

From: Effects of exogenous melatonin on the growth and photosynthetic characteristics of tomato seedlings under saline-alkali stress

Processing representative symbols

Composition of different treatments

Melatonin/(µmol·L− 1)

Saline-alkali solution /(mmol·L− 1)

CK

0

0

T0

0

75

T1

50

75

T2

100

75

T3

150

75

T4

200

75