Showing papers by "Gian Gabriele Franchi published in 2000"
TL;DR: The problems involved in applying histochemical and cytochemical methods to mature angiosperm pollen for bright light and fluorescence microscopy are discussed and the main methods of staining and their applications are summarised.
Abstract: The problems involved in applying histochemical and cytochemical methods to mature angiosperm pollen for bright light and fluorescence microscopy are discussed. These methods can be used for general examination or to reveal particular structures or groups of substances. The main methods of testing pollen viability and germinability based on stains and semiquantitative methods are also reviewed. The main methods of staining and their applications are summarised.
54 citations
TL;DR: The oil yield was higher from plants collected in Romagna than in those collected in Tuscany and the main components of the Romagna and Tuscan oils were α-thujone and camphor, respectively.
Abstract: The essential oil, isolated by hydrodistillation from flowering tops of Artemisia coerulescens L. subsp. cretacea (Fiori) Br.-Catt. et Gubell., was investigated by GC/MS. The analyses were carried out on oils obtained from plants collected in Romagna and in Tuscany (Central Italy) in three different stages of growing cycle. The oil yield was higher from plants collected in Romagna than in those collected in Tuscany. The main components of the Romagna and Tuscan oils were α-thujone (59.6–71.0% and 32.9–39.7%), β-thujone (17.8–18.7% and 10.0–10.8%) and camphor (4.2–6.2% and 35.6–45.3%), respectively.
3 citations