Fig. 10

Expression analysis of IbVQ8, IbVQ25 and IbVQ44 in sweetpotato cultivars or lines. A Relative expression levels in storage roots after different times of sweetpotato stem nematode infection. B Relative expression levels after different times of Ceratocystis fimbriata infection. C Relative expression levels in leaves after different times of cold (16 °C) treatments. D Relative expression levels in leaves after different times of salt (86 mM NaCl) treatments. E Relative expression levels in leaves after different times of drought (30% PEG 6000) treatments. The significance of expression levels compared with control were denoted as ∗  < 0.05, ∗  ∗  < 0.01. h, hours; d, day(s)