A. Kazeminasab; M. Yarnia; M.H. Lebaschi; B. Mirshekar; F. Rajali
Abstract
Effects of vermicompost and plant growth promoting biofertilizers on the essential oil composition of lemon balm (Melissa officinalis L.) were studied under different irrigation conditions. The study was conducted in a split-split plot experiment based on a randomized complete block design with ...
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Effects of vermicompost and plant growth promoting biofertilizers on the essential oil composition of lemon balm (Melissa officinalis L.) were studied under different irrigation conditions. The study was conducted in a split-split plot experiment based on a randomized complete block design with three replications, at Research Institute of Forests and Rangelands.Treatments included irrigation in two levels (100 and 60% FC drought stress), vermicompost in three levels (0, 5 and 10t/ha) and plant growth promoting biofertilizers in four levels (Pseudomonas fluorescence, Azotobacter + Azospirillum, Azotobacter + Azospirillum + P. fluorescence, and the control). The essential oil components including citronellal, geraniol, neral, β-caryophyllene and methyl citronellat were studied. The interaction of irrigation × vermicompost showed significant effect on citronellal at P≤0.01 and on geraniol and methyl citronellat at P≤0.05. Mean comparison of irrigation indicated that the highest and lowest citronellal, geraniol, neral and β-caryophyllene, were obtained for drought stress and normal irrigation (100% FC), respectively. The highest and lowest methyl citronellat were recorded for the normal irrigation and drought stress (60% FC), respectively. Mean comparison of the effect of vermicompost showed that the highest (47.7%) and lowest (45%) citronellal were obtained for 10 t/ha vermicompost and control treatments, respectively. Application of 5 t/ha vermicompost resulted in the highest β-caryophyllene (6%). Mean comparison of the biofertilizers indicated that Azotobacter + Azospirillum + P. fluorescence had the highest citronellal (47.2%) and β-caryophyllene (5.9%); the lowest citronellal (45.6%) and β-caryophyllene (5.1%) were achieved in the control. Drought stress increased the essential oil compounds. Vermicompost just affected the citronellal. In addition, PGPR had a positive effect only on citronellal and β-caryophyllene.
M.R. Akhgar; M. Moradalizadeh
Abstract
The genus Nepeta (Labiatae) with the common Persian name of “Pune-sa” includes 67 species in Iran and Nepeta schiraziana Boiss. is one of its endemic species. In this study, the stems, flowers and leaves of Nepeta schiraziana were collected from Sepidan region in north-west of Fars Province. ...
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The genus Nepeta (Labiatae) with the common Persian name of “Pune-sa” includes 67 species in Iran and Nepeta schiraziana Boiss. is one of its endemic species. In this study, the stems, flowers and leaves of Nepeta schiraziana were collected from Sepidan region in north-west of Fars Province. The essential oils of stems, flowers and leaves of the plant were separately obtained by hydrodistillation and analyzed by GC and GC/MS. In each oils of the stem and flower, fourteen components were identified with 1,8-cineole (45.6% and 39.4%), germacrene D (17.4% and 15.8%), and β-caryophyllene (11.7% and 10.6%) as the main constituents, respectively. Furthermore, 1,8-cineole (38.5%), β-caryophyllene (14.2%), and caryophyllene oxide (11.7%) were the major components among the 18 constituents characterized in the leaf oil. As a result, 1,8-cineole was the dominant compound in the investigated oils while nepetalactone isomers reported in many Nepeta species, were not identified in Nepeta schiraziana.
H. Amiri; M.H. Meshkat Al Sadat; H. Lari Yazdi; A. Goodarzi
Volume 22, Issue 3 , November 2006, , Pages 270-275
Abstract
Salvia reuterana Boiss is a grassy and permanent herb, and belongs to Labiatae family which grows wild in some regions of Iran including Lorestan province. The aerial parts of Salvia reuterana Boiss. were collected from North of Aleshtar (North of Lorestan province) on June 2005. The essential ...
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Salvia reuterana Boiss is a grassy and permanent herb, and belongs to Labiatae family which grows wild in some regions of Iran including Lorestan province. The aerial parts of Salvia reuterana Boiss. were collected from North of Aleshtar (North of Lorestan province) on June 2005. The essential oil was obtained by hydro-distillation at yield of 0.6% (based on dry weight). The oil was analyzed by GC and GC/MS. Twenty-eight constituents, representing 91.7% of the oil, were identified. The major components of the oil were germacrene-D (27.5%), β-caryophyllene (15.5%), bicyclogermacrene (9.2%), caryophyllene oxide (6.3%) and spathulenol (5.7%).
