Abstract

A micromorphological and phytochemical survey was performed on Scutellaria brevibracteata subsp. subvelutina cultivated in Italy. The indumentum of the vegetative and reproductive organs was investigated: peltate, short-, medium- and long-stalked capitates were described. Histochemistry evidenced similar results for peltates and long-stalked capitates, differences for short and medium capitates. For the first time, this work reported the characterization of volatile organic compounds from leaves and flowers, along with the first analysis of the essential oil obtained from the aerial parts of Italian samples. The floral profile resulted more complex than the foliar one, due to the higher number of the total compounds (40 vs 27) and of the exclusive constituents (24 vs 11). 16 common compounds were detected, with β-caryophyllene as the most abundant. The essential oil was characterized by 23 compounds, with β-caryophyllene dominating. The peltates, the medium and the long-stalked capitates resulted the producers of the investigated compounds.

摘要

对Scutellaria brevibracteata subsp.进行了微形态学和植物化学调查。subvelutina在意大利种植。研究了营养和生殖器官的毛被：描述了盾形、短柄、中柄和长柄头状体。组织化学证明盾形和长柄头状动物的结果相似，短和中型头状动物的差异。这项工作首次报道了叶子和花朵中挥发性有机化合物的特征，以及对从意大利样品地上部分获得的精油的首次分析。由于总化合物的数量较多（40 vs27) 和独家成分 (24对11)。检测到 16 种常见化合物，其中 β-石竹烯含量最高。精油由 23 种化合物表征，其中 β-石竹烯占主导地位。盾形动物、中形动物和长柄头形动物是所研究化合物的生产者。