Search results for "phenological stage"
showing 2 items of 2 documents
Artemisia arborescens L.: essential oil composition and effects of plant growth stage in some genotypes from Sicily
2012
Essential oils from aerial parts of several Artemisia arborescens L. populations, collected in five different localities of Sicily, were analyzed by gas chromatograph–flame ionization detector (GC–FID) and GC–mass spectrometry (GC–MS) in order to study the chemical composition and its variability due to phenological stage. Forty-three compounds, accounting for more than 92% of the oil, were identified. Monoterpene fraction with the exception of Petru population was higher than the sesquiterpene fraction. β-Thujone (20.5–55.9%), chamazulene (15.2–49.4%), camphor (1.3–10.7%) and germacrene D (2.3–3.4%) were the main compounds. Chemical composition was influenced by phenological stage, with an…
Bio-agronomic behaviour and an initial study of the energy properties of Carthamus tinctorius L. and Brassica carinata A. Braun crop residues
2009
In recent years, the agro-energy sector has become of considerable importance, both as a vehicle towards realising the objectives established by the Kyoto protocol and as a means of meeting the ever increasing demand for energy. Biofuels represent one of the most promising forms of renewable energy due to their wide range of applications, although limited by the fact that they do not compete on a cost level with fossil fuels. This study takes a look at the bio-agronomic response and the physical and energetic properties of crop residues of a selection of Carthamus tinctorius L. and Brassica carinata A. Braun accessions in order to evaluate integrating oilseed production with lignocellulosic…