Fig. 2
Effect of two selenium forms (SeNPs and Se (IV)) on rapeseed seedlings (Yangyou 9) during the early seedling stage. a impacts of selenium treatments on the germination characteristics (FG%: final germination percentage, GR: germination rate, VI (I): vigor index I and VI (II): vigor index II). SeNPs stimulated seedling growth. b Different concentrations of SeNPs and Se (IV) (0, 50, 100 and 150 µmol/L) differentially affected rapeseed seedlings phenotype. Scale bar = 1 cm. c–f Impact of selenium treatments on c shoot length (cm); d root length (cm); e shoot fresh weight (g) and f root fresh weight (g) under different concentration of SeNPs and Na2SeO3 (0, 50, 100 and 150 µmol/L) during the early seedling stage. Bars represent ± SE of three replicates. The different letters indicate significant differences at P < 0.05 using Duncan's multiple range tests