Soil Moisture and Glutamic Acid Affect Yield, Volatile Oil and Proline Contents of Oregano Herb (Origanum vulgare L.)

Ahmed, Aisha; Talaat, Iman M.; Khalid, Khalid A.

doi:10.3923/ijb.2017.43.51

Cited by 27 publications

(8 citation statements)

References 25 publications

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“…The application of 10 mM glutamic acid increased volatile oil percentage, volatile oil yield ml plant-1 and volatile oil yield L fed-1 by (48.61 and 37.08%, 75 and 67.5% & 75.19 and 65.90%) for 1st and 2nd cuts in the first season, respectively as compared to untreated plants. Our results were agree with Ahmed et al (2017) on oregano.…”

Section: Volatile Oil Percentage Volatile Oil Yield (Ml Plant -1 ) An...supporting

confidence: 91%

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Impact of glutamic acid foliar application on sweet basil plants under different irrigation levels in reclaimed land

Mohammed

Rashwan

hamed

2022

Scientific Journal of Agricultural Sciences

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The present study was conducted during 2019 and 2020 seasons in the Experimental Farm of EL-Quassassin, Horticulture Research Station, Ismailia Governorate, Egypt to investigate the effect of foliar application of glutamic acid on sweet basil (Ocimum basilicum, L. var. Grand Vert) plants grown under different irrigation levels. A split-plot design was used, the main factor was irrigation levels (50%, 75% and 100% of crop evapotranspiration (ETc)), while the glutamic acid at (0, 5 and 10 mM) were assigned in sub-factor. The results showed that irrigation rates had a significant effect on most aspects for the two cuts in both seasons. Where the irrigation level at 100% ETc was the most effective treatment. The foliar spraying with glutamic acid on sweet basil plants had a positive effect on plants, it significantly increased growth, yield parameters and chemical composition in treated plants as compared to un treated ones. Regarding the interaction treatments, it was worth to be mentioned that, there was insignificant difference, when spraying with glutamic acid under irrigation level at 100 or 75% ETc in most studied traits. Also, the results of Gc-Ms analysis of sweet basil volatile oil indicated that, the highest linalool content which consider the main component was produced with irrigation level at 75% ETc +spraying with 10mM glutamic acid. Furthermore, glutamic acid foliar application improve irrigation water utilization efficiency (IW.Ut.E). The highest IW.Ut.E was recorded at the interaction of irrigation level at 50% ETc with foliar application by10mM glutamic acid.

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Section: Volatile Oil Percentage Volatile Oil Yield (Ml Plant -1 ) An...supporting

confidence: 91%

“…Also, no significant difference was found between spraying with 5mM and 10mM glutamic acid in the 2 nd cut of the first season and the two cuts of the second season. Our results are on line with Ahmed et al (2017) on oregano.…”

Section: Growth Parameterssupporting

confidence: 91%

Impact of glutamic acid foliar application on sweet basil plants under different irrigation levels in reclaimed land

Mohammed

Rashwan

hamed

2022

Scientific Journal of Agricultural Sciences

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“…Similar constituents were identified in bitter fennel EO under Egyptian conditions (Shalaby & Hendawy, 2011). Other factors affect EO production in conjunction with current treatments, such as stress conditions (Khalid & Shedeed, 2014Ahmed et al, 2017;, fertilization (Khalid, 2012), location (Khalid et al, 2018), and distillation methods (Khalid et al, 2009). This trial recommended treating bitter fennel with L-Phe to produce EO and served as a reference for selecting a suitable plant part to produce EO based on the target constituents.…”

Section: Discussionmentioning

confidence: 75%

Changes in Bitter Fennel Essential Oils Exposed to Foliar Spray with L-Phenylalanine

et al. 2021

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Egyptian Journal of Botany http://ejbo.journals.ekb.eg/ 19 P RODUCERS in Egypt tend to use traditional methods of feeding medicinal and aromatic plants and separating the essential oils of bitter fennel from fruits only. However, they have not focused on other parts. This study was conducted to evaluate the essential oils of bitter fennel plants sprayed with L-phenylalanine and determine the possibility of using L-phenylalanine in the production of essential oils from bitter fennel parts. Bitter fennel exposed to different L-phenylalanine rates (0.0, 0.3, 0.6, 0.9, and 1.2g/L). Changes in essential oil sources (fresh and dry weights of herbs harvested at vegetative, flowering, and immature fruiting and dry weights of mature fruits) were recorded. Essential oils were extracted through hydrodistillation and analyzed through GC/MS. The greatest weights of plant parts and essential oil yields were recorded with 0.9 g/L. The main compounds were limonene and estragole. The highest values of limonene and monoterpene hydrocarbons were observed with the treatment of 0.6g/L L-phenylalanine in the flowering herb, whereas 0.3g/L L-phenylalanine produced the greatest value of estragole in mature fruits. The treatment of 0.9g/L L-phenylalanine produced the maximum value of oxygenated monoterpenes in mature fruits. The herb obtained in the immature fruiting period had the greatest value of sesquiterpene hydrocarbons under control treatment. Thus, this study could be used as a reference for selecting the suitable L-phenylalanine rate and bitter fennel part to produce essential oils based on the target constituents.

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“…AMAs had significant impacts on khella EO and its components such as 2,2‐dimethyl butanoic acid, isobutyl isobutyrate, α‐isophorone, thymol, fenchyl acetate and linalool 17 . AMAs resulted in different variations in oregano EO, major components (carvacrol, p ‐cymene and γ‐terpinene), monoterpenes and sesquiterpenes 52 . AMAs promoted the accumulation of Indian borage EO and its major constituents (carvacrol, thymol, γ‐terpinene and limonene) 53 .…”

Section: Discussionmentioning

confidence: 99%

“…17 AMAs resulted in different variations in oregano EO, major components (carvacrol, p-cymene and γ-terpinene), monoterpenes and sesquiterpenes. 52 AMAs promoted the accumulation of Indian borage EO and its major constituents (carvacrol, thymol, γ-terpinene and limonene). 53 Different increases were found in lemon EO yield, limonene, neral, geranial, neryl acetate, γ-terpinene, monoterpenes and sesquiterpenes due to AMAs doses.…”

Section: Effect Of Gsh α-Tcp and Their Interactions On The Eo Constit...mentioning

confidence: 99%

Effect of glutathione and α‐tocopherol on coriander green fruits essential oil

Khalid

Ahmed

2022

Flavour & Fragrance J

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Coriander essential oil has several biological characters those make it an important place as a source of natural product. Due to the lack of natural products, many essential oil compounds are imitated by others made of cheap chemicals, which studies have shown to have a great danger to human health. From this point of view, it is necessary to search for new ways to increase natural products, the most important of which are essential oils. One of these methods is the use of bioregulators to modify the production of essential oil and its components to increase its biological use area. Thus, the variations of coriander green fruits essential oil were evaluated under different rates of glutathione and α‐tocopherol to determine the possibility of using them in the production of essential oil from coriander green fruits. Coriander plants were treated during cultivation at rates of glutathione (0, 0.2, 0.4 and 0.6 g L−1) without or with α‐tocopherol (0.4 g L−1). Green fruits essential oil was separated by hydro‐distillation and analysed by gas chromatography and gas chromatography/Mass spectrometry; data were statistically analysed by two ways analysis of variance. Plants treated with 0.6 g L−1 glutathione with α‐tocopherol gave the maximum values of green fruits yield and essential oil content (% and yield per plant). The major essential oil constituents were linalool, undecan‐3‐ol and yomogi alcohol; while oxygenated monoterpenes were the main fractions. Plants exposed to glutathione with α‐tocopherol doses resulted in higher values of major components and main fraction than those subjected to glutathione rates. This trial ascertained that the subordination of coriander plants to glutathione and α‐tocopherol rates led to variations in green fruits essential oil, and this, in turn, affected its biological activities.

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Soil Moisture and Glutamic Acid Affect Yield, Volatile Oil and Proline Contents of Oregano Herb (Origanum vulgare L.)

Cited by 27 publications

References 25 publications

Impact of glutamic acid foliar application on sweet basil plants under different irrigation levels in reclaimed land

Impact of glutamic acid foliar application on sweet basil plants under different irrigation levels in reclaimed land

Changes in Bitter Fennel Essential Oils Exposed to Foliar Spray with L-Phenylalanine

Effect of glutathione and α‐tocopherol on coriander green fruits essential oil

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