scholarly journals Effects of irrigation intervals and organic manure on morphological traits, essential oil content and yield of oregano ( Origanum vulgare L.)

2016 ◽  
Vol 88 (4) ◽  
pp. 2375-2385 ◽  
Author(s):  
FARZAD GERAMI ◽  
PARVIZ R. MOGHADDAM ◽  
REZA GHORBANI ◽  
ABBAS HASSANI
Keyword(s):  
Essential Oil ◽  
Morphological Traits ◽  
Oil Content ◽  
Organic Manure ◽  
Origanum Vulgare

scholarly journals Features of the Bacillus thuringiensis 888 strain’s influence on the content of essential oil, antioxidants and flavonoids in Origanum vulgare L.

2021 ◽  
Vol 11 (3) ◽  
pp. 430-440
Author(s):  
A. V. Kryzhko ◽  
U. M. Budzhurova ◽  
E. D. Ametova ◽  
I. A. Novikov ◽  
E. E. Soboleva ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Essential Oil ◽  
Oil Content ◽  
Total Content ◽  
Component Composition ◽  
Water Soluble ◽  
Soluble Carbohydrates ◽  
Origanum Vulgare ◽  
Reduction Of Iron ◽  
Spore Culture

Abstract: This article aims to study the influence of the culture of the Bacillus thuringiensis var. thuringiensis 888 on the quality of the vegetative mass of Origanum vulgare in terms of the number of antioxidants and flavonoids, yield and composition of the essential oil. The research material included a liquid spore culture of the B. thuringiensis 888 strain, samples of oregano: sample no. g-4, containing 52.0% carvacrol in essential oil; No. 2 containing 59.85% α-terpineol; No. 1 with a predominant content of germacrene D (21.5%) and β- caryophyllene (19.4%). Soluble carbohydrates in the plants were determined using M.S. Dubois’s method, flavonoids – spectrophotometrically at 420 nm following R.A. Bubenchikov’s method. The total content of antioxidants was determined using the reduction of iron(III) chloride to iron(II) chloride. The essential oil content of Origanum vulgare was determined by using hydrodistillation following A.S. Ginsberg. Gas chromatography was used to determine component composition of the essential oil. The results show that treating the O. vulgare samples with the spore culture of B. thuringiensis 888 strain culture does not significantly affect the accumulation of terpenoid quinones, tochromanols and water-soluble antioxidants in leaves. It has been shown that treating oregano with an ordinary liquid spore culture of the B. thuringiensis 888 strain promotes the formation of a persistent tendency towards the accumulation of reducing sugars in the vegetative mass of plants — up to 30.8% compared to the control. Treating plants with a culture of B. Thuringiensis 888 strain promoted an increase in the essential oil content in O. vulgare plants of the sample no. 1 by 2.4 times, as compared to the control and did not significantly affect the essential oil content of the samples no. 2 and no. g-4. The sample no. g-4 was the most resistant to treatment with entomopathogenic bacteria, and the content of linalool and caryophyllene oxide in essential oils decreased by 44.6 and 37.1%, respectively, and linalyl acetate by 4.3 times compared with the control, as well as the accumulation of α-terpineol by 86.1%.

scholarly journals Ecological Adaptability of Some Cultivars and Breeding Samples of Origanum vulgare L.

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 16
Author(s):  
Elena Myagkikh ◽  
Svetlana Babanina ◽  
Alexander Mishnev ◽  
Ludmila Radchenko ◽  
Vladimir Pashtetskiy ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Oil Yield ◽  
Temperate Climate ◽  
Origanum Vulgare ◽  
Oil Accumulation ◽  
Ecological Adaptability ◽  
Local Genotypes ◽  
Essential Oil Yield ◽  
Research Institute

Since the registry of common oregano (Origanum vulgare L.) cultivars does not involve regionalization, a comprehensive study of cultivars bred by different institutions in the intended cultivation region is valuable and relevant. The objective of the research was to assess the possibility of using various indices of ecological adaptability originally developed for grain crops for their use in the most adapted genotypes’ selection (breeding samples and cultivars) of Origanum vulgare L. to the temperate climate of the Crimean Peninsula. The research was carried out in the piedmont zone of Crimea from 2016 to 2019. The study material consisted of breeding samples No. 10 and No. 82 from the collection of FSBSI “Research Institute of Agriculture of Crimea”, as well as cultivars Zima, Raduga, and Slavnitsa selected by the All-Russian Scientific Research Institute of Medicinal and Aromatic Plants (ARSRIMAP). Genotype had the greatest influence on yield of fresh oregano material (43%) with the influence of the weather conditions of the year being 2%. On the contrary, meteorological conditions had a much greater effect on the essential oil accumulation and its areal yield, which were 30% and 25%, respectively. In terms of the coefficient of ecological variation of fresh yield, sample No. 82 and Slavnitsa cultivar were the best (11.47–16.7%). The local genotypes No. 10 and No. 82 varied less by the essential oil content and its yield. The genotype effect value was greater than 0 in the Raduga cultivar and local genotype No. 82 for the yield, but only in No. 82 genotype for the other two characteristics. Cultivars Zima and Raduga were classified as intensive (bi > 1) by the environmental flexibility of fresh yield, while local genotype No. 82 and Slavnitsa cultivar formed the group of intensive ones by essential oil content and essential oil yield. Local genotypes No. 10 and No. 82 were better than the introduced cultivars in terms of essential oil content homeostability and essential oil yield (Hom = 1.91–2.18). Thus, local genotypes proved to be more adapted to the region’s conditions in terms of essential oil accumulation. However, they were inferior to the registered cultivars of ARSRIMAP breeding in terms of fresh yield.

scholarly journals EFFECT OF DROUGHT AND HUMIC ACID ON MORPHOLOGICAL TRAITS AND ESSENTIAL OIL CONTENT OF THYMUS KOTSCHYANUS

2020 ◽  
Vol 21 (Supplement 1) ◽  
Author(s):  
Mahdi Saber ◽  
Mahdi Changizi ◽  
Shahab Khaghani ◽  
Masoud Gamariyan Gamariyan ◽  
Abbas Pourmeidani ◽  
...  
Keyword(s):  
Drought Stress ◽  
Humic Acid ◽  
Essential Oil ◽  
Morphological Traits ◽  
Oil Content ◽  
Stress Conditions ◽  
Thymus Kotschyanus ◽  
Crop Capacity ◽  
Irrigation Levels ◽  
Different Levels

The study was conducted to investigate the effect of Humic Acid organic fertilizer on the performance of Thymus Kotschyanus populations under the influence of drought stress. This experiment was performed as a three-factor factorial in the form of a completely randomized design (CRD) for 5 replications (pots) in the greenhouse of Pardisan Research Station belonging to Qom Agricultural and Natural Resources Research and Training Center. Three factors include 5 top accessions of T. Kotschyanus (factor A), irrigation levels at 80% crop capacity (control), irrigation at 60% crop and irrigation capacity at 40% crop capacity (FC) (factor B); and different levels of Humic acid including 3 Levels of 0, 1500 and 3000 mg/l were dissolved in irrigation water twice after full establishment of the plants and twenty days after the first iteration (factor C). The results of trait variance analysis showed that there was a significant difference at the level of possible error of 1% or 5% between the top accessions of T. Kotschyanus and between different irrigation levels in terms of all traits under study. Effectiveness of accession × irrigation levels were also significant in most traits at the level of 1% or 5% probability of error. In other words, the behavior of different Thymus accessions at different irrigation levels was significantly different and the effect of irrigation levels on different irrigations was not similar. These results are consistent with the reports of many researchers on the effect of drought stress on morphological traits as well as increasing essential oil content in drought stress conditions in medicinal plants. Hassani et al. (2006) reported on the effect of different levels of water stress on growth, performance, and essential oil content of Dracocephalum moldavica. Many traits, such as aerial organ length, wet and dry weight of aerial organ were reduced in dry stress conditions, and the highest percentage of essential oil was obtained for 70% crop capa

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