Influence of Plant Growth Stage on the Essential Oil Content and Composition in Davana (Artemisia pallensWall.)

1999 ◽  
Vol 47 (1) ◽  
pp. 254-258 ◽  
Author(s):  
Gopal R. Mallavarapu ◽  
Raghavendra N. Kulkarni ◽  
Kuppusamy Baskaran ◽  
Laxmi Rao ◽  
Srinivasaiyer Ramesh
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Oil Content ◽  
Growth Stage

IMPACT OF SEASON AND HARVEST FREQUENCY ON BIOMASS AND ESSENTIAL OIL YIELDS OF ARTEMISIA HERBA-ALBA CULTIVATED IN SOUTHERN TUNISIA

2009 ◽  
Vol 45 (4) ◽  
pp. 499-508 ◽  
Author(s):  
HEDI MIGHRI ◽  
AHMED AKROUT ◽  
JOSEPH CASANOVA ◽  
FELIX TOMI ◽  
MOHAMED NEFFATI
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Growth Stage ◽  
Arid Zone ◽  
Experimental Period ◽  
The Other ◽  
Flowering Stage ◽  
Harvest Frequency ◽  
Dry Biomass ◽  
Essential Oil Yield

SUMMARYArtemisia herba-alba Asso has been successfully cultivated in the Tunisian arid zone. However, information regarding the effects of the harvest frequency on its biomass and essential oil yields is very limited. In this study, the effects of three different frequencies of harvesting the upper half of the A. herba-alba plant tuft were compared. The harvest treatments were: harvesting the same individual plants at the flowering stage annually; harvesting the same individual plants at the full vegetative growth stage annually and harvesting the same individual plants every six months. Statistical analyses indicated that all properties studied were affected by the harvest frequency. Essential oil yield, depended both on the dry biomass and its essential oil content, and was significantly higher from plants harvested annually at the flowering stage than the other two treatments. The composition of the β- and α-thujone-rich oils did not vary throughout the experimental period.

The effect of distillation methods and stage of plant growth on the essential oil content and composition of Satureja rechingeri Jamzad

2007 ◽  
Vol 100 (3) ◽  
pp. 1054-1058 ◽  
Author(s):  
Fatemeh Sefidkon ◽  
Khadijeh Abbasi ◽  
Ziba Jamzad ◽  
Shahla Ahmadi
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Oil Content

Plant growth and essential oil content of Mentha crispa inoculated with arbuscular mycorrhizal fungi under different levels of phosphorus

2015 ◽  
Vol 67 ◽  
pp. 103-107 ◽  
Author(s):  
Regiane Cristina Urcoviche ◽  
Zilda Cristiani Gazim ◽  
Douglas Cardoso Dragunski ◽  
Fernando Gomes Barcellos ◽  
Odair Alberton
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Oil Content ◽  
Arbuscular Mycorrhizal ◽  
Mentha Crispa ◽  
Different Levels

Inoculation of arbuscular mycorrhizal fungi and phosphorus addition increase coarse mint (Plectranthus amboinicus Lour.) plant growth and essential oil content

Rhizosphere ◽  
2020 ◽  
Vol 15 ◽  
pp. 100217
Author(s):  
Everton Merlin ◽  
Elisangela Melato ◽  
Emerson Luiz Botelho Lourenço ◽  
Ezilda Jacomassi ◽  
Arquimedes Gasparotto Junior ◽  
...  
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Oil Content ◽  
Arbuscular Mycorrhizal ◽  
Phosphorus Addition ◽  
Plectranthus Amboinicus

Physiological changes during heartwood formation induced by plant growth regulators in Dalbergia odorifera (Leguminosae)

IAWA Journal ◽  
2021 ◽  
pp. 1-18
Author(s):  
Zhiyi Cui ◽  
Xiaofei Li ◽  
Daping Xu ◽  
Zengjiang Yang ◽  
Ningnan Zhang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Oil Content ◽  
Basic Density ◽  
Wood Properties ◽  
Physiological Changes ◽  
Heartwood Formation ◽  
Dalbergia Odorifera

Abstract There is a need to better understand and promote formation of ‘Jiang Xiang’, the highly valuable heartwood of Dalbergia odorifera T. Chen. Plant growth regulators are the most widely used and generally most effective promoters of heartwood formation. However, to date no method has been proved effective for D. odorifera as little is known about biochemical and physiological change during heartwood development. Four potential heartwood induction substances viz. ethephon, methyl jasmonate, salicylic acid and abscisic acid solutions were injected into the trunk of D. odorifera to determine the effect on heartwood formation and related physiological responses. Non-structural carbohydrates, wood properties, essential oil and histochemical and structural observation were assessed in the post-treatment period. As also observed in the formation of natural heartwood, growth regulator-induced Jiang Xiang production was accompanied by sapwood dehydration, non-structural carbohydrates consumption and synthesis of heartwood specific substances. These substances were synthesized in the ray and axial parenchyma and than transported into the vessels through the pits. As the heartwood substances accumulated, basic density and essential oil content increased gradually, thereby Jiang Xiang was finally produced. In this process, physiological parameters of discoloured sapwood gradually evolved to resemble those of natural heartwood. Ethephon-induced Jiang Xiang was closest to natural heartwood and its density, essential oil content, composition and relative amounts met the standards for high-quality Jiang Xiang, while the other inducers had unsatisfactory induction effects. This study supports the hypothesis that ethephon could be applied to induce formation of Jiang Xiang in D. odorifera.

Arbuscular mycorrhizal fungi associated with Leptospermum scoparium (mānuka): effects on plant growth and essential oil content

Symbiosis ◽  
2017 ◽  
Vol 75 (1) ◽  
pp. 39-50 ◽  
Author(s):  
Wisnu Adi Wicaksono ◽  
Catherine E. Sansom ◽  
E. Eirian Jones ◽  
Nigel B. Perry ◽  
Jana Monk ◽  
...  
Keyword(s):  
Essential Oil ◽  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Oil Content ◽  
Arbuscular Mycorrhizal ◽  
Leptospermum Scoparium

scholarly journals Growth and essential oil production by Martianthus leucocephalus grown under the edaphoclimatic conditions of Feira de Santana, Bahia, Brazil

2015 ◽  
Vol 46 (4) ◽  
pp. 593-598
Author(s):  
Bianca Oliveira de Azevedo ◽  
Lenaldo Muniz de Oliveira ◽  
Angélica Maria Lucchese ◽  
Daniel de Jesus da Silva ◽  
Carlos Alberto da Silva Ledo ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Essential Oil ◽  
Plant Growth ◽  
Oil Content ◽  
Semiarid Region ◽  
Spearman Correlation ◽  
Aromatic Plants ◽  
Medicinal And Aromatic Plants ◽  
Monthly Data ◽  
Pharmacological Potential

ABSTRACT: The semiarid region of Brazil holds a great richness of medicinal and aromatic plants with considerable potential for pharmaceutical, food, cosmetic and biopesticide industries. Martianthus leucocephalus (Mart. Ex Benth.) J. F. B. Pastore is endemic to this region, and its essential oils contain a principle compound, isobornyl formate, which demonstrates antimicrobial activity against Bacilus cereus, Staphylococcus aureus and Candida albicans. In spite of its significant pharmacological potential, little is known about its growth. In light of the influence of seasonality on plant growth, development, and secondary metabolism, the present study evaluated the growth and essential oil content of M. leucocephalus grown and harvested during different months of the year in the edaphoclimatic conditions of Feira de Santana, Bahia State, Brazil. The experimental design was entirely randomized, with twelve harvesting periods and five replicates. The study acquired monthly data of mean temperatures, relative humidity, rainfall, irradiance, and photoperiod from the National Institute of Meteorology (INMET) and quantified the fresh and dry weights of leaves, flowers and branches, as well as leaf area, and essential oil content. The data were submitted to Spearman correlation analysis and the means were compared using the Scott-Knott test. Total leaf masses and oil contents were higher during periods with longer photoperiods and higher solar irradiance. Rainfall and relative humidity reduced plant growth and essential oil content. Higher total mean dry masses were recorded from September to January (except October), while oil content was higher in March.

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