Analysis of Aroma Volatiles from Michelia crassipes Flower and Its Changes in Different Flower Organs during Flowering

Michelia crassipes is a great ornamental plant, the flowers of which have high economic value. In this study, we employed headspace solid-phase microextraction (HS–SPME) combined with gas chromatography high-resolution mass spectrometry (GC–HRMS) for first time to identify volatile compounds emitted from different organs M. at flowering stages. flower odor comprises 69 that are dominated by terpenes constituting 84% collected volatiles. It was found α-guaiene, β-caryophyllene and germacrene B had highest relative amounts, while ethyl 3-methyl valerate, methyl benzoate β-damascone activity values (OAVs). This contributed complex fruity, woody floral aromas crassipes. Total emission increased along blooming, most abundant in pistil followed tepals stamens. Paraffin sections showed density oil secretory cells full stage, positively correlated total release. The scent characterized terpenes, whereas stamens benzenoids. We suggest benzenoids might contribute pollinator attraction