F. Sefidkon; R. Taebnia; M. Mirza
Abstract
Satureja species are aromatic plants, belonging to Lamiaceae family. The green parts and essential oils of Satureja species are used in medicinal and food industries. Satureja rechingeri Jamzad is an endemic species growing wild in Ilam province. In this research, the seeds of six populations were collected ...
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Satureja species are aromatic plants, belonging to Lamiaceae family. The green parts and essential oils of Satureja species are used in medicinal and food industries. Satureja rechingeri Jamzad is an endemic species growing wild in Ilam province. In this research, the seeds of six populations were collected from natural habitats for domestication of this species and study the essential oil content and composition in cultivated plants. The seeds were cultivated in the research farm of Research Institute of Forests and Rangelands in three replications in a complete randomized blocks design. For comparing the yields and constituents of essential oil, the aerial parts of each accession were collected in full flowering stage at three consecutive years. The plant materials were subjected to hydro-distillation after drying in room temperature. The oil yields were calculated and the oil compositions were identified by GC and GC/MS analysis and retention indices. Our results showed an increasing pattern for the oil yields of four populations during three years after cultivation and then it reached to 4.8%-6% in the third year. The major compound in all oils was carvacrol accounted for 80 to 88% in two- and three- year-old plants. According to the obtained results and improved yield of essential oil in cultivated samples compared to the wild ones as well as high levels of carvacrol, the cultivation of S. rechingeri in the same condition could be recommended.
A. Ehsanipour; K. Razmjoo; H. Zeinali
Abstract
This investigation was carried out to study the effect of different nitrogen rates on yield, yield components and essential oil of several fennel (Foeniculum vulgare Mill.) populations. The experiment design was split plot with three replications conducted during 2008 at Research Farm of Isfahan University ...
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This investigation was carried out to study the effect of different nitrogen rates on yield, yield components and essential oil of several fennel (Foeniculum vulgare Mill.) populations. The experiment design was split plot with three replications conducted during 2008 at Research Farm of Isfahan University of Technology. Nitrogen levels were 0, 40, 80, 120 and 160 N kg/ha as the main plot and four populations of fennel (Isfahan, Tehran, Yazd and 11486) located in subplot. Seed yield, essential oil percentage, 1000-seed weight, biomass, harvest index, number of seeds per umbel, number of umbels per plant, seed length, and plant height were measured. Results showed significant differences for seed yield, 1000-seed weight, harvest index, number of seed per umbel, number of umbels per plant, seed length, plant height and percentage of essential oil among fennel populations. Also, seed yield per ha, 1000-seed weight, number of seed per umbel, seed length, number of umbels per plant and percentage of essential oil significantly differed in different nitrogen levels. There was an interaction effect between N rates and populations for 1000-seed weight, harvest index, number of seed per umbel, seed length, number of umbels per plant and plant height. The highest seed yield per hectare among the populations belonged to Isfahan population, obtained on control and 40 and 160 kg/ha nitrogen fertilization. The highest essential oil percentage was obtained on population of 11486 at 40 kg/ha nitrogen fertilization.
