Fig. 2. DAMs between XL in Comparative metabolomics analysis of the response to cold stress of resistant and susceptible Tibetan hulless barley (Hordeum distichon)

Fig. 2. DAMs between XL and ZQ. (A) Numbers of DAMs under cold stress (12 °C, 5 °C, 0 °C, −5 °C, −8 °C) or the control condition (24 °C) in XL and ZQ. 1/2/3/4/5/ 6 represent 24 °C/12 °C/5 °C/0 °C/–5 °C/–8 °C, respectively.(B) Upregulated and downregulated metabolites in XL and ZQ at different temperatures. 1/2/3/4/5/6 represent 24 °C/12 °C/5 °C/0 °C/–5 °C/–8 °C, respectively. (C, D) Metabolites that were significantly altered in XL exposed to cold stress (12 °C, 5 °C, 0 °C) compared to the control condition (24 °C), but not in ZQ.