7.1.1. Cymbidium goeringii

*C. goeringii* is one of the most popular terrestrial species indigenous to temperate Eastern Asia, cultivated as an ornamental, and whose flowers are used as an ingredient in soup, alcoholic drinks, and tea [88]. Floral fragrance is determined by a mixture of volatile compounds. In *C. goeringii*, floral scent pathways have been studied in various developmental stages during flowering [28]. Sesquiterpenes are the major compounds in the *C. goeringii* floral scent profile. The dominant floral scent compounds were identified as farnesol, methyl epi-jasmonate, (*E*)-β-farrnesene, and nerolidol. In particular, examination of farnesol emission from the day of anthesis (D0) to the fifth day after anthesis (D+5) demonstrated that emission had a peak at the D+2 stage. Transcriptomic analyses focusing on floral scent pathways have been performed using three different stages of flowers in *C. goeringii*. Most terpenoid pathway genes, including *1-deoxy-D-xylulose-5-phosphate reductoisomerase* (*DXR*), *1-deoxy-D-xylulose-5-phosphate synthase* (*DXS*), and *farnesyl diphosphate synthase* (*FDPS*), were expressed at the initial flowering stage compared to bud and/or full flowering stages [28]. Furthermore, 32 and 38 unigenes known to be associated with MVA and MEP pathways, respectively, were reported in *C. goeringii.* Several TPSs and TFs were also identified in the floral transcriptome of *C. goeringii* including *CgTPS7*, which encodes a key enzyme involved in sesquiterpene synthesis. A putative terpenoid pathway responsible for the volatile profile in *C. goeringii* has also been reported.
