Paeonia cultivars are famous ornamental plants, and some of them are also traditional Chinese medicinal resources. Intersubgeneric hybrids of Paeonia (IHPs) are formed by the hybridization of herbaceous peony ( Paeonia lactiflora ) and tree peony ( Paeonia × suffruticosa or lutea hybrid tree peony). The phenotypic characteristics of IHPs are similar to those of herbaceous peony, and their root systems are large and vigorous. However, their medicinal value has not been reported yet. In this study, the roots of eight IHP samples were analyzed by high performance liquid chromatography quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF-MS/MS). A total of 18 compounds were identified, including phenols, paeonols, monoterpene glycosides, and tannins. The contents of monoterpene glycosides and tannins in IHPs were higher than herbaceous peony and tree peony, exceeding 44.76 mg/g DW and 11.50 mg/g DW, respectively. Three IHPs, 'Prairie Charm', 'Garden Treasure', and 'Yellow Emperor', with more types and a higher content of medicinal compounds, were screened out by cluster analysis. These IHPs have considerable potential for the development of medicinal resources.

中文翻译：

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8个芍药亚属间杂种根部化学成分分析

芍药栽培品种是著名的观赏植物，有的还是中药资源。芍药亚属间杂种（IHPs）是由芍药（Paeonia lactiflora）和牡丹（Paeonia × suffruticosa 或 lutea hybrid 牡丹）杂交形成的。IHPs的表型特征与芍药相似，根系大而健壮。但其药用价值尚未见报道。在本研究中，通过高效液相色谱四极杆飞行时间质谱 (HPLC-Q-TOF-MS/MS) 分析了八个 IHP 样品的根部。共鉴定出18种化合物，包括酚类、丹皮酚、单萜糖苷和单宁。IHPs中单萜苷和单宁的含量高于芍药和牡丹，分别超过44.76 mg/g DW和11.50 mg/g DW。通过聚类分析，筛选出“草原魅力”、“园林宝藏”、“黄帝”三个IHP，种类较多，药用成分含量较高。这些 IHP 具有开发药用资源的巨大潜力。