A. Rahmanpour; A. Majd; F. Chalabiane
Volume 23, Issue 1 , May 2007, , Pages 111-120
Abstract
The effects of hormonical, chemical and physical treatments were studied on seed germination of seeds of Eremurus olgae. The ripening seeds were collected from National Botanical Garden of Iran. Seeds were treated under physical stimulator pretreatments including soaking seeds in the water for 24-48h, ...
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The effects of hormonical, chemical and physical treatments were studied on seed germination of seeds of Eremurus olgae. The ripening seeds were collected from National Botanical Garden of Iran. Seeds were treated under physical stimulator pretreatments including soaking seeds in the water for 24-48h, cutting seeds top, making abrasion on seed cortex, subjecting to light for 24h, 12h and absolute darkness and chemical stimulator like sodium hypochloride, citric acid and gibberellic acid in different densities for finding the appropriate methods of seed germination and dormancy breaking were applied. The results showed that the most suitable pretreatment and treatment were soaking seeds in water for 24-48h, removing seed cortex, cutting seed top, temperature 10-15°C, white light, 24h (4500-5000 lux) and treating in gibberrelic acid (0.08 Molar) for 45 minutes in 1-3 weeks makes the germination percentage (80%), germination speed 1.6, seed vigor 13.65 and treating in citric acid (30 mg/lit) with germination percentage (70%), germination speed (1.27) and seed vigor (7.3). The results showed some important differences comparing to controls.
A. Rahmanpour; A. Majd; F. Chalabiane
Abstract
The ripening seeds of Eremurus stenophyllus were collected from existed species from National Botanical Garden of Iran and put under physical stimulator pretreatments including soaking of seeds in water for 24-48h, cutting of seeds top, making abrasion on seed cortex, exposing to light for 24h and 12h ...
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The ripening seeds of Eremurus stenophyllus were collected from existed species from National Botanical Garden of Iran and put under physical stimulator pretreatments including soaking of seeds in water for 24-48h, cutting of seeds top, making abrasion on seed cortex, exposing to light for 24h and 12h and absolute darkness and chemical stimulators like sodium Hypochloride, Citric acid and Gibberellic acid in different concentrations for finding the suitable methods for inducing germination and breaking dormancy by these methods, the maximum percentage of seed germination and the most suitable treatment has been specified. The results showed that the most suitable pretreatment and treatment were soaking of seeds in the water for 24-48h, removing of seed cortex and washing in sodium hypocholoride 35% and distilled water, cutting of seed top and Gibberrelic acid treatment (0.005 M.) for 45 minutes under 10-15°C white light, 24h (4500-5000 lux ) for 1-3 weeks which made the germination percent 75%, germination speed 0.81, seed vigor 6.75 . Treatment with Citric acid (30mg/lit) included germination percent 100%, germination speed 0.86 and seed vigor 9. The results showed some important differences in comparison with controls.
Z. Abravesh; A. Majd; M.B. Rezaee; S. Mehrabian
Abstract
Man used to take a lot of medicinal plants, but a little to take care of their duration. To find methods for increasing their products always paid attention to plant. Essential oil of the flowering shoot of Ammi visnaga was extracted by hydro-distillation method and the essential oil inhibitory effects ...
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Man used to take a lot of medicinal plants, but a little to take care of their duration. To find methods for increasing their products always paid attention to plant. Essential oil of the flowering shoot of Ammi visnaga was extracted by hydro-distillation method and the essential oil inhibitory effects have been studied by using well diffusion method on four bacteria consists of: Streptococcus viridans, Lactobacillus casei, Lactobacillus plantarum, Lactobacillus acidophilus (control: cetylpyridinium chloride 0.05%). Effective essential oil against above mentioned bacteria suspension were studied by micro organism 108 colony forming unit/ml (cfu/ml). Bactericide activity of essential oil of Ammi visnaga flowering shoot observed later of 24-48 hours. The zones of growth inhibition were as follow: Streptococcus viridans 35mm, Lactobacillus casei 50mm, Lactobacillus plantarum 35mm, Lactobacillus acidophilus 35mm and control 12mm.
Sh. Mehrpur; F. Sefidkon; H. Mirzaie-Nodoushan; A. Majd
Volume 20, Issue 2 , July 2004, , Pages 159-169
Abstract
To investigate quality and quantity of essential oil of Thymus kotschyanus in greenhouse and field cultivation, seeds of four populations of this species from Azarbayejan, Sirachal, Mianeh and Tabriz were collected and cultivated in greenhouse and field condititions. Kelevenger method was ...
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To investigate quality and quantity of essential oil of Thymus kotschyanus in greenhouse and field cultivation, seeds of four populations of this species from Azarbayejan, Sirachal, Mianeh and Tabriz were collected and cultivated in greenhouse and field condititions. Kelevenger method was used to extract the essential oils from the plants foliage. Essential oil components were analysed and recognised by GC and GC/MS. The components included Thymol, Carvacrol and r-cymene.The highest main percentage of Thymol(65.94%), and r-cymene(20.40%), were found in Azarbayejan population and Carvacrol (53.14%), in Sirachal population. The oil yeilds of Thymus kotschyanus in field were higher than greenhouse conditions, but Thymol and Carvacrol were decreased and other monoterpenes were the major components of the essential oils in greenhouse conditions. In field conditions, the percentage of r-cymene was high, comparing to greenhouse condition, but g- terpinene was trace.This problem can be related to temprature and other conditions in field and greenhouse conditions. On the other hand, these differences between the oil composition of the greenhouse, and field grown populations, may reveal a common route of formation the components in the species.
A. Majd; S. Mehrabian; Z. Jafary
Volume 19, Issue 3 , October 2003, , Pages 286-312
Abstract
In this study anti-microbial properties of aquatic and ethanolic extract of urtica dioica were tested.The antimicrobial properties of aquatic and ethanolic extracts (80%) of this plant were studied on four species of bacteria (Pseudomonas. aeruginosa, Bacillus subtilis, Staphilococcus aureus, E.coli ...
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In this study anti-microbial properties of aquatic and ethanolic extract of urtica dioica were tested.The antimicrobial properties of aquatic and ethanolic extracts (80%) of this plant were studied on four species of bacteria (Pseudomonas. aeruginosa, Bacillus subtilis, Staphilococcus aureus, E.coli and a fungus (Candida albicans) using routine methods appling the Muller-Hinton Agar, Sabourou Dextrose Agar and pour plate method, measuring the diameter of inhibitory zone . The Ethanolic extract(80%) of plant showed antimicrobial effect on Pseudomonas. a, Bacillus subtilis, Staphilococcus aureus, E. coli, Candida albicans, among them urtica’s seed extract had the most effect on gram –positive bacteria , urtica, s leaf had the most effect on gram-negative bacteria and urtica’s flower had the most fungicidal property.All the aquatic extracts of plant showed antimirobial effect on extracts thses microorganisms except Pseudomonas.a
