جستجوی مقالات مرتبط با کلیدواژه "کردستان" در نشریات گروه "باغبانی"

This study was conducted to evaluate the essential oil (EO) quality and quantity of six thyme species (Thymus spp.), growing in the natural habitats of Kurdistan province, in 2010. To conduct this research, six species of thyme were identified in different habitats and used for essential oil extraction. Water distillation (Clevenger-type apparatus) was used to obtain the EOs and the components were identified using the gas chromatography (GC) system and a gas chromatograph connected to mass spectrometer (GC/MS). The results showed that more than 30 components were identified in the EOs, among which thymol, carvacrol, geraniol, alpha terpinole and linalool were the most important components. The EO yields were 3.05%, 2.53%, 2.83%, 1.51%, 1.31% and 1.05% for T. fallax, T. daenensis, T. pubescens, T. transcaucasicus, T. fedtschenkoi and T. kotschyanus, respectively. The content of thymol was calculated to be 70.6%, 62.2%, 27.8% and 1.5 in the EOs of T. daenensis, T. fedtschenkoi, T. pubescens and T. kotschyanus, respectivelyand the content of carvacrol was recorded to be 3.43%, 4.80% and 0.74% in the EOs of T. daenensis, T. fedtschenkoi and T. pubescens, respectively.

Satureja avromanica Maroofi is an endemic aromatic species from Lamiaceae family in Iran. In this study, for investigation of chemical composition of wild and cultivated S. avromanica, seeds of this plant were collected from natural habitate at Avroman area in Kurdistan province and cultivated in research farm of Grize Research Station in 2010. Aerial parts of wild and cultivated plants were harvested at full flowering stage for two years and after drying in shade, their essential oils were obtained by hydro-distillation. Chemical composition of the essential oils were identified using GC and GC/MS. In the oils of first and second years of cultivation, 16 and 14 compound were characterized, respectively. In natural site, essential oil yields was 1.4%. In cultivated plants at first and second years essential oil yields were 0.17 and 0.21% respectively.  The main components of the essential oils in cultivated samples were thymol (32.3, 12.7%), carvacrol (23.6-48.3%), γ-terpinene (5.4-8.4%) and p-cymene (18.1-9.9 %) at first and second years respectively, while thymol wild sample was 83.9%  ,carvacro l 5.2% and p-cymene (3.9%) in wild accession of Avroman plants. The yields (0.17-0.21%) and phenolic compounds (55.9-61.0%) in the oil samples taken from the farm compared to the yields (1.4%) and phenolic compounds (89.1 %) from oil samples habitat has decreased, but oil phenolic compounds in samples taken from the farm  second year (61.0%)compare to the first year(55.9%) of planting, has increased, that it can be concluded that species is adapted to the environmental conditions of the farm.

One hundred isolates of Fusarium solani species complex were isolated and identified from 58 agricultural soil samples collected from different geographical regions in Kermanshah, Hamadan and Kurdistan provinces of Iran. Based on morphological characteristics, Fusarium falciforme, F. petroliphilum, F. keratoplasticum and F. pseudensiforme, are reported for the first time from Iran.