The Tuscany Archipelago small islands ecology is very characteristic and different from the continental habitats; the island biotypes are very limited in quality and extension. The effect “island” is the element mainly influencing the natural environment due to the geographic isolation with the continent. The ecosystems are strongly isolated; the unfavourable climatic conditions as the poor summery moisture, the remarkable exposure to strong winds transporting salts, the absence of an abundant and deep soil create difficult conditions for many species, either vegetables or animals, creating limit of life for those specifically adapted also. The variability of the secondary metabolite, and among these the essential oils extracted constituents, depends by problematic tied to the survival. The plants of the Tuscany Archipelago could have a secondary particular metabolism and a patrimony of biodiversity to protect and to conserve. The aim of this study has been to evaluate throught a multidisciplinary research, plants of Rosmarinus officinalis L. growing spontaneous on the islands of the National Park of the Tuscany Archipelago; the studyed areas have been: Gorgona, Capraia, Pianosa, Montecristo, Giglio and Giannutri. Therefore we have been carried out phyto sociological, agronomic and phyto chimic investigations. The germination tests have evidenced a very low germination percentage in all the examined ecotypes. Among the treatments used to stimulate the germination (KNO3, prechilling, GA3, hypochlorite, high temperatures, dark, light) the GA3 solution gave higher germination percentages than other treatments. The yield of the essential oil obtained from the sample of the islands evidenced a content of the essential oil significantly higher for the island of Gorgona, of Montecristo and of Giannutri respecting to the other examined islands. The island of Gorgona had highest essential oil content (3.6%) while in the island of Pianosa the percentage of extracted oil was lowest (1.5%).
GERMOPLASMA DI ROSMARINUS OFFICINALIS L. DEL PARCO NAZIONALE DELL'ARCIPELAGO TOSCANO
BUTI C;MACCHIA, MARIO;FLAMINI, GUIDO;
2007-01-01
Abstract
The Tuscany Archipelago small islands ecology is very characteristic and different from the continental habitats; the island biotypes are very limited in quality and extension. The effect “island” is the element mainly influencing the natural environment due to the geographic isolation with the continent. The ecosystems are strongly isolated; the unfavourable climatic conditions as the poor summery moisture, the remarkable exposure to strong winds transporting salts, the absence of an abundant and deep soil create difficult conditions for many species, either vegetables or animals, creating limit of life for those specifically adapted also. The variability of the secondary metabolite, and among these the essential oils extracted constituents, depends by problematic tied to the survival. The plants of the Tuscany Archipelago could have a secondary particular metabolism and a patrimony of biodiversity to protect and to conserve. The aim of this study has been to evaluate throught a multidisciplinary research, plants of Rosmarinus officinalis L. growing spontaneous on the islands of the National Park of the Tuscany Archipelago; the studyed areas have been: Gorgona, Capraia, Pianosa, Montecristo, Giglio and Giannutri. Therefore we have been carried out phyto sociological, agronomic and phyto chimic investigations. The germination tests have evidenced a very low germination percentage in all the examined ecotypes. Among the treatments used to stimulate the germination (KNO3, prechilling, GA3, hypochlorite, high temperatures, dark, light) the GA3 solution gave higher germination percentages than other treatments. The yield of the essential oil obtained from the sample of the islands evidenced a content of the essential oil significantly higher for the island of Gorgona, of Montecristo and of Giannutri respecting to the other examined islands. The island of Gorgona had highest essential oil content (3.6%) while in the island of Pianosa the percentage of extracted oil was lowest (1.5%).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
