Abstracts
Two accessions of fennel (Foeniculum vulgare Mill) were collected from two Tunisian localities (Sahel and Sfax) and grown in field trials under four rates of nitrogen (50, 100, 150 and 200 kg/ha) to evaluate their essential oil yield and composition in response to this nutrient. The essential oil from seeds was extracted by hydrodistillation and analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC-MS). The essential oil yield presented significant differences between the two fennel seed accessions studied. The highest seed yield per hectare among the accessions belonged to Sfax accession, obtained on 50 and 150 kg/ha nitrogen fertilization.
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