Fig. 3From: Physiological and transcriptomic comparisons shed light on the cold stress response mechanisms of Dendrobium sppThe cluster heat map (CHM) (A) and principle component analysis (PCA) (B) of the physiological indices. The numbers 1–3, 4–6, 7–9, 10–12, 13–15 and 16–18 represent three replicates after cold treatment 0, 1, 2, 4, 8 and 16 d, respectivelyBack to article page