Fig. 2From: Phytochemical and comparative transcriptome analyses reveal different regulatory mechanisms in the terpenoid biosynthesis pathways between Matricaria recutita L. and Chamaemelum nobile L.Total Ion Chromatorgraphy of essential oil from disk florets of German chamomile (a), ray florets of German chamomile (b), disk florets of Roman chamomile (c) and ray florets of Roman chamomile (d). Ethyl caprate: the internal standard for calculating relative peak ratiosBack to article page