Fig. 2 in Tissue specificity of (E)-β-farnesene and germacrene D accumulation in pyrethrum flowers

Fig. 2. Analysis of terpene volatiles in flower head and peduncle (upper and lower) at early flowering stages (S0–S2). (A) Chromatogram profiles of T. cinerariifolium S1 flower head and upper peduncle hexane extracts analyzed by GC–MS and presented as total extracted ion current (EIC, m/z 93). Chromatogram profile of lower peduncle hexane extraction was not shown here due to the same peak patterns with the upper peduncle. For analysis conditions see text. List of the main terpene components, see Table 1 (B) Quantification of EβF and GD content in flower head and lower and upper peduncle at early flowering stages (S0–S2). Fresh flower tissues were extracted with hexane and analyzed by GC-MS. The GD and EβF concentrations were both estimated using an EβF standard reference curve. Error bars indicate ± SE of three biological replicates.