Fatemeh Sefidkon; Fatemeh Zakerian; maryam jebelli; Fatemeh Askari
Abstract
Objective: This research was conducted with the aim of investigating the effect of different nutritional treatments on the yield and compositions of Satureja bachtiarica Bunge essential oil. Satureja bachtiarica Bunge is an endemic aromatic and medicinal plant from the Lamiaceae family. Satureja bachtiarica ...
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Objective: This research was conducted with the aim of investigating the effect of different nutritional treatments on the yield and compositions of Satureja bachtiarica Bunge essential oil. Satureja bachtiarica Bunge is an endemic aromatic and medicinal plant from the Lamiaceae family. Satureja bachtiarica is found in the west and center of Iran, in the habitat of rocky and stony slopes in some areas.Method: This experiment was performed during four years (2018 to 2021) in the agricultural conditions of the Alborz province. Sixteen nutritional treatments included chemical fertilizer, animal manure, vermicompost, mixtures with different amounts of chemical fertilizer, animal manure and vermicompost, Glomus mosseae, Glomus intraradaices, Azospirillum lipoferrum, Pseudomonas putida, Thiobacillus thioparus, Thiobacillus thioparus+ different amounts of sulfur, Thiobacillus thioparus+ vermicompost, and the control treatment. In treatments containing mycorrhiza, before planting the seedlings in the field, 10 grams of Glomus mushroom were poured into each planting hole. In treatments containing bacteria, to inoculate the seedlings with the desired bacteria, first the seedlings were placed in the inoculum for 20 minutes, then they were transferred to the culture pits and irrigation was done immediately for these treatments. Plants were harvested at the full flowering stage, dried at room temperature and hydro-distilled for obtaining the essential oils. The oils were analyzed by gas chromatography (GC-FID) and gas chromatography coupled to mass spectrometer (GC/MS).Results: The results of composite variance analysis showed that the effect of timing (as indicated by the year) and the interaction of year in nutritional treatments on the percentage of essential oil (weight/weight) were significant at the 5% probability level. The highest yield of essential oil (2.30%) in the second year was obtained from the treatment of 50 tons of nitrogen, 25 tons of phosphorus and 25 tons of potassium per hectare+ 60 tons per hectare of animal manure. Additionally,the highest percentage of carvacrol was observed during 4 years with an average of 61.2% in the treatment of 60 tons per hectare of manure.Conclusions: The results showed that the use of nutritional treatments were effective in increasing carvacrol and the efficiency of Satureja bachtiarica essential oil compared to the control.
Fatemeh Sefidkon; Seys Reza Tabayi Aghdayi; Meysam Ansari; Zahra Behrad; Fatemeh Asgari
Abstract
Satureja sahendica Bornm. is an endemic medicinal plant which grows wild in natural habitats of west and north-west regions of Iran. In this study, for domestication of Satureja sahendica and study it's essential oil content and composition, the seeds of seven populations were collected from natural ...
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Satureja sahendica Bornm. is an endemic medicinal plant which grows wild in natural habitats of west and north-west regions of Iran. In this study, for domestication of Satureja sahendica and study it's essential oil content and composition, the seeds of seven populations were collected from natural habitats and cultivated in three replications as a complete randomized blocks design. The aerial parts of each accession were collected in full flowering stage at three consecutive years. The essential oils were obtained by hydro-distillation and analyzed by GC and GC/MS. The results showed the highest oil yields were obtained at the first year after cultivation. The major compounds in all oils were Thymol, P-cymene and -terpinene with different percentages. The highest amount of thymol was found in the oils of the plants at second year. In the other words, the oils had better quality, in the second year. The percentage of -terpinene were reduced in the oils in the second year and then increased in the third year. Amount of p-cymene did not show similar changes during three studied years. Generaly, it can be said annual plants had higher oil yields and two-year old plants had better oil quality.