: in this study, the essential oil obtained by hydrodistillation of the aerial parts of sclerorhachis platyrachis (boiss.) podlech ex rech. f. (compositae), growing wild in sabzevar, khorasan razavi province (iran), was analyzed by gc and gc/ms. the total yield of volatiles was 0.38% (w/w). sixty- three compounds representing 89.2% of the aerial parts oil were identified.  the main components o...

regions (Dobzhansky 1950, MacArthur 1969, Schemske 2002, Schemske et al. 2009). A priori, one might indeed expect that species with broad niches inhabit temperate environments, as lower productivity and more seasonal and inter-annual fl uctuations in climate and resources should select for morphological, physiological and behavioral traits that allow foraging on a broad range of food types (Was...

The genus Astrantia L. is a perennial plant which belongs to the Umbelliferae family and is represented by only A. maxima Pallas which has two subspecies (subsp. maxima and subsp. haradjianii (Grintz.) Rech. fil.) in Turkey. Subsp. haradjianii is endemic and very common. In this study, Astrantia specimens were collected from different localities and investigated for morphological and anatomical...

The chemical composition of the essential oil of fruits of Pimpinella haussknechtii. was studied by GC-MS. After GC-MS analysis, one unknown component (56.7%) was observed, which was not characterized in the GC-MS library. The essential oil of P.haussknechtii was injected to HPLC using YMC-Pak-Sil column (250 × 20 mm) with gradient system of hexane (A), and hexane: ethyl acetate, 9:1 (B) to yie...