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. 2022 Sep 9;23(18):10474. doi: 10.3390/ijms231810474

Figure 2.

Figure 2

Effects of betaine treatment on the activities of protective enzymes and stress-related growth regulators at 0 h, 12 h, 24 h, and 48 h of tomato seed germination under low-temperature stress. Different lowercase letters indicate significant differences at the 0.05 probability level (p < 0.05). (A) SlSOD, (B) SlPOD, (C) SlchlAPX, (D) SOD activity, (E) POD activity, (F) CAT activity, (G) Pro content, (H) H2O2 content, (I) MDA content. CS: germination of seeds pretreated with just water under 14 °C cold stress; CB: germination of seeds pretreated in 10 mmol/L of GB under 14 °C cold stress.