Analysis of the Volatile Components in Flowers of Paeonia lactiflora Pall. and Paeonia lactiflora Pall. var. Trichocarpa
2021
Paeonia
lactiflora Pall.
var. trichocarpa is a variety of Paeonia lactiflora Pall., and is currently the
peony herb’s
principal cultivar group. Here, we study the differences in aromatic components
and flowers of different varieties between two groups of cultivars, providing a
reference for applying natural fragrance substances of peonies, breeding
fragrant flower types, and developing and using
improved varieties. Headspace solid-phase microextraction (HS-SPME), gas chromatography-mass spectrometry (GC-MS), peak
area normalization for each component relative to content, component
library (NIST14/NIST14S) retrieval, and a literature review were used to analyze the volatile compounds in
flowers of eight peony varieties, such as “Gaoganhong”, and ten comospore peony varieties,
such as “Jinshanhong”. Results showed that the
main volatile compound constituents in flowers of the two groups were terpenes
and alcohols. Additionally, the content of eucalyptol, caryophyllene, α-Pinene,
citronellol, and 3-Hexen-1-ol, acetate,
(Z) was high. Peony cultivars contained linalool, (1R)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene, and 1,4-dimethoxybenzene, while comospore peony varieties contained
1,3,6-octatriene, 3,7-dimethyl-, (Z)-, phenylethyl
alcohol, and geraniol. In this study, the differences between the volatile
components of flowers of different peony varieties were clarified, laying a
foundation for further molecular biology research into the floral fragrance of
peonies and the cultivation of new varieties of aromatic peonies. At the same
time, it also provides a theoretical basis for the development and application
of peony flower by-products.
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