FIGURE 1 Impact of LT stress treatment on physiology and biochemical indexes in rapeseed. (A) Plant phenotype, (B) survival rate, (C) maximum quantum ef fi ciency of photosystem II (PSII) Fv/Fm, (D) hydrogen peroxide (H2O2), (E) malondialdehyde (MDA), (F) soluble sugar, (G) proline contents, (H) superoxide dismutase (SOD) 1124 activity, (I) peroxidase (POD) activity, (J) ascorbate peroxidase (APX) activity, (K) 1125 Catalase (CAT) activity. Asterisks show signi fi cant levels at **P ≤ 0.01, *P ≤