Fig. 1 in Tissue specificity of (E)-β-farnesene and germacrene D accumulation in pyrethrum flowers

Fig. 1. Morphological and anatomical structures of stage 2 (S2) Tanacetum cinerariifolium flowers. (A) Longitudinal section of an S2 flower with peduncle attached. The arrow points to a cavity in the center of the pith that will become larger when the flower matures. The inset pictures show cross sections of the upper and lower peduncle (4 cm individually). (B) A closed disk flower. (C–G) SEM images of the T. cinerariifolium S2 flower organs and tissues. (C) The corollas of closed disk flowers. (D and E) Different magnifications of bract tissue, with an arrow pointing to the longitudinal serpentine vascular system located in the joining site with receptacle. (F and G) Cross sections of the flower peduncle and a detailed view of the disintegrating pith tissue.