Fig. 1

Numbers of DEGs in two cultivars at the same freezing stress. DZCK, ‘Dongzao’ treated at 4 °C; DZA: ‘Dongzao’ treated at − 10 °C; DZB: ‘Dongzao’ treated at − 20 °C; DZC: ‘Dongzao’ treated at − 30 °C; DZD: ‘Dongzao’ treated at − 40 °C; JSCK: ‘Jinsixiaozao’ treated at 4 °C; JSA: ‘Jinsixiaozao’ treated at − 10 °C; JSB: ‘Jinsixiaozao’ treated at − 20 °C; JSC: ‘Jinsixiaozao’ treated at − 30 °C; JSD: ‘Jinsixiaozao’ treated at − 40 °C