In the present study, the antioxidant potency of ethyl acetate (AcOEt) and methanol (MeOH) extracts from the aerial parts of Seseli L. species was investigated for the first time. Seseli species L. such as Seseli andronakii Woronow ex Schischk., S. campestre Besser, S. corymbosum Boiss. & Heldr., S. gummiferum subsp. gummiferum Pall. ex Sm., S. hartvigii Parolly & Nordt, S. libanotis (L.) W.Koch, S. petraeum M.Bieb., S. peucedanoides (M.Bieb.) Koso-Pol., S. resinosum Freyn & Sint., and S. tortuosum L. growing in Turkey were collected and evaluated for their antioxidant capacity by using 1.1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and lipid peroxidation (LPO) inhibition methods. The highest activities as a scavenger of DPPH radicals were found in the AcOEt extracts of S. peucedanoides (M.Bieb.) Koso-Pol (IC₅₀=0.49 mg/mL), and S. libanotis (IC₅₀=0.75 mg/mL); α-tocopherol was used as a positive control. On the other hand, in the LPO assay, the highest activities were determined in AcOEt and MeOH extracts (at 5 mg/mL) of S. tortuosum and S. libanotis (84-94%). This report gives important information about the antioxidant capacity of Seseli L. species. This research on antioxidant capacity proves that the use of some species used in Eastern Anatolia (in salads) is correct. With this screening study performed in Seseli L. species growing in Turkey, in the future, it is planned to isolate antioxidant compounds from the most active strains of Seseli L.

Coriander, Coriandrum sativum L, is an important medicinal plant belonging to Apiaceae family, which is grown in many parts of Turkey. In this study, essential oil and composition of 6 Turkish coriander cultivars (Gamze, Arslan, Erbaa, Pelmus, Kudret, Gürbüz) were examined in two different (Mardin and Tokat) ecologies. Essential oils were isolated with distillation method in maturated fruits and component composition was determined with gas chromatography–mass spectrometry (GC-MS). Main component was linalool in all cultivar, and it was higher in the conditions of Mardin having a warmer climate in all the cultivars than that of Tokat with temperate climate. Contrary to linalool, α-pinene and neryl acetate contents of all cultivar were higher in Tokat.

Rosa damascena Mill. is the most prominent rose source for the manufacturing of rose oil, rose water, concrete, and absolute from flower petals. The purpose of this study was to see how different harvest dates affected the essential oil components and rates obtained from flowers in oil rose planted for the first time in Turkey's Mardin Province. Blossoms were taken five times with three replications, at around one-week intervals, from a garden in the Yaylabaşı district at 6:00 a.m. (4, 11, 18, 24, and 31 May). Animal manure and leonardite were used instead of chemical fertilizers for plants. No chemical pesticides have been applied. Essential oil components of the oils obtained by a water distillation system (Clevenger apparatus) were determined by GC/MS. The citronellol ratio, which is the most important component for the quality of the essential oil in the plant, was found to be highest (35.90%) in the first harvest period and lowest in the last harvest period (17.57%). Geraniol levels decreased in the first three harvests, with the greatest level (27.16%) coming in the last harvest. The percentages of citronellol/geraniol varied between 1.51 and 0.65 depending on the different harvest dates. Nerol rates peaked at 15.44% on the first harvest, progressively declined until the fourth harvest (7.92%), then slightly increased on the fifth harvest. Nonadecane continuously increased from the first to the last harvest (4.10%-11.66%). No methyl eugenol was detected. Mardin is a promising location for oil-bearing rose cultivation, given the essential oil components and their ratios.

Bu çalışma; yağ gülü (Rosa damascena Mill.), kadıntuzluğu (Berberis thunbergii DC.), biberiye (Rosmarinus officinalisL.) ve lavanta (Lavandula angustifolia Mill.) bitkilerine ait çeliklerde, farklı köklendirme ortamları [torf, perlit, torf-perlit(1:1) ve kokopit] ve indol-3-bütirik asit (IBA) dozlarının (0, 1000, 2000, 3000, 4000, 5000 ppm) köklenmeye etkilerinisaptamak amacıyla yapılmıştır. Çelikler, sera ortamında farklı IBA çözeltilerine maruz tutularak dört farklı ortamda dikimleriyapılmıştır. Yaklaşık 80 gün köklendirmeye bırakılan çeliklerde köklenme oranları, kök uzunlukları ve kök sayılarıbelirlenmiştir. Araştırma sonucunda, köklendirme ortamları ve farklı dozlardaki IBA uygulamalarının yağ gülü, kadıntuzluğu,biberiye ve lavanta çeliklerinde köklenmeye etkisi anlamlı bulunmuştur. Yağ gülü, kadıntuzluğu, biberiye ve lavantabitkilerinde en yüksek köklenme oranları sırasıyla % 95.00, % 81.67, % 88.33 ve % 82.50; kök sayıları sırasıyla 19.28, 13.44,26.12 ve 17.38 adet bitki-1 ve kök uzunlukları sırasıyla 18.89, 14.32, 25.58 ve 17.26 cm ile perlit köklendirme ortamında ve4000-5000 ppm IBA çözeltisinde olduğu tespit edilmiştir. Bitki çeliklerinin köklendirme ortamı olarak perlit ortamından, IBAdozu olarak ise adventif köklenmeyi teşvik eden 4000 ppm uygulamasından en iyi sonuçlar alınmıştır.