1O2*	singlet oxygen
ANOVA	statistical analysis of variance
APX	ascorbate peroxidase
BSA	bovine serum albumin
C	optimal, control conditions
CAT	catalase
CDNB	1-chloro-2,4-dinitrobenzene, citric acid
DAPI	diamidine-2′-phenylindole dihydrochloride
DTT	dithiothreitol
DNA	deoxyribonucleic acid
DNPH	2,4-dinitrophenyl hydrazine
DW	dry weight
EDTA	ethylenediaminetetraacetic acid disodium salt
FW	fresh weight
GSH	reduced glutathione
GSH-PX	glutathione peroxidase
GSSG	glutathione disulfide
GSSG-R	glutathione reductase
GST	glutathione S-transferase
H	hydroconditioning with water
H2O2	hydrogen peroxide
HCl	hydrochloric acid
HMel 50	hydroconditioning with MEL solutions at 50 μM
HMel 500	hydroconditioning MEL solutions at 500 μM
HPLC-EC	High Pressure Liquid Chromatography with Electrochemical Detection
IAA	indole-3-acetic acid
MC	moisture content
MDA	malondialdehyde
MEL	melatonin
NBT	nitrotetrazolium blue chloride
NT	non-treated, control seeds
NADPH	β-nicotinamide adenine dinucleotide phosphate reduced form
NBT	nitrotetrazolium blue chloride
NO	nitric oxide
OH*	hydroxyl radical
ONOO–	peroxynitrite anion
PEG	polyethylene glycol
PMSF	phenylmethylsulfonyl fluoride
PVP	polyvinylpyrrolidone,
R	regeneration after stress
RNS	reactive nitrogen species
ROS	reactive oxygen species
S	chilling stress
SEM	standard error of the mean
SOD	superoxide dismutase
TBA	thiobarbituric acid
TBARS	thiobarbituric acid reactive substances
TCA	trichloroacetic acid and tween