Showing 6 results for Ghorbani
Nayyereh Ghorbani, Hossein Moradi, Vahid Akbarpour, Azim Ghasemnejad,
Volume 4, Issue 14 (Vol. 4, No. 14 2016)
Abstract
Violet has many application in landscaping and herbal medicine . Salicylic acid hormone and phosphorus Nano-fertilizer compounds are considered as effective in regulating physiological processes and plant secondary metabolites. Therefore, a factorial experiment based on completely randomized design with 2 agent salicylic acid and fertilizer phosphorus Nano-fertilizer in 3 replications. Spraying with different levels of 0 ,0.1 ,0.7 ,1.5 mM hormone salicylic acid and phosphorus Nano-fertilizer at levels of 0 ,0.5 ,1.5 and 3 g/l in three stages on violets was applied. Morphological parameters were including diameter and number of flowers, flower spikes shoot length ,fresh weight and dry matter percentage violet flower . Phytochemical and biochemical parameters including photosynthetic pigments (chlorophyll a, b and carotenoids ) and antioxidant capacity & anthocyanins with spectrophotometry and quercetin & rutin values were determined by HPLC. The results indicate that salicylic acid and phosphorus Nano impact on most morphological and phytochemical at 1 and 5 percent. Both treatments increased the levels of morphological characteristics and pigments. High levels of salicylic acid and lower phosphorus Nano improved secondary metabolites. So to achieve maximum plant biomass and optimizatied secondary methabolites, application of different concentrations of the hormone and phosphorus Nano to increase the characteristics value of medicinal and ornamental , is required.
Seyed Jaber Nabavi, Seyed Hassan Zali, Jamshid Ghorbani, Sayed Yahya Kazemi,
Volume 6, Issue 19 (vol.6,no. 19, Year 2017 2018)
Abstract
Juniperus communis L. from the plants growing in Iran and in the highlands in the valleys of Gorgan hall altitude pass, Hezarjarib and Talysh Spill distributed. In this study, the quality and quantity of active ingredients (extracts) J. communis aerial parts of the plant in different habitat Hezarjarib in behshahr was summer pastures. Branches covering height in 1950, 2050, 2150 and 2250 meters above sea level collected then dried in the open air under the shade. Extract of aerial parts of the plant as meo h-Extract (methanol) to identify compounds extracted from the extract by GC / MS were used. Data analysis was done using SPSS software to analyze and compare the characteristics of an extract from the analysis of variance (ANOVA) and T-test was used. 41 combined extract of aerial parts of the plant were identified, among which compounds are &alpha-pinene, sabinene, limonene, &beta- cubebene and diallyl phthalate, and also has the highest percentage of sites significant effect on the composition of phthalate diethyl and &beta-thujene in extract has branches. Compounds abieta-8,11,13-triene, d- (+) - carvone, hexadecanamide, elemol and trans sabinene hydrate were found only in one locality. Also, a significant correlation was observed between 12 combination with some soil elements.
Mr Abouzar Ghorbani, Dr Seyed Mehdi Razavi, Velliollah Ghasemi, Hemetollah Pirdeshti,
Volume 7, Issue 27 (vol. 7, no. 27 2019)
Abstract
The influence of endophyte fungus piriformospora indica on characteristics of the growth, water status, photosynthetic pigments concentration, gas exchange, and chlorophyll fluorescence of tomato plants under salt stress (0, 50, 100 and 150 mM) was studied in the greenhouse. Under salt stress, mycorrhizal tomato plants had higher dry weight of shoot and root, higher height, higher carotenoid and chlorophyll content, better water status (increased water use efficiency, relative water content and water potential), higher gas exchange capacity (increased photosynthetic rate, stomatal conductance and transpiration rate, and decreased intercellular CO2 concentration), higher non-photochemistry efficiency [increased non-photochemical quenching values (NPQ)], and higher photochemistry efficiency [increased the maximum quantum yield in the dark-adapted state (Fv/Fm), the maximum quantum yield in the light-adapted sate (Fv′/Fm′), the effective quantum yield of photochemical energy conversion of PSII (∆F'/F'm) and the photochemical quenching values (qP)], compared with non-mycorrhizal tomato plants. All the results indicated that endophyte symbiosis alleviates the deleterious effect of salt stress probably via improving photosynthesis and water status of tomato plants.
Mahsa Emami, Asghar Estaji, Alireza Ghanbari, Zahra Khazaei, Hassan Ghorbani Ghouzhdi,
Volume 12, Issue 54 (vol. 12, no. 54 2023)
Abstract
Medicinal plants contain valuable active compounds that are produced in limited quantities under natural conditions, so the use of methods such as tissue culture and stimulant materials is useful to produce more secondary metabolites in medicinal plants. In this study, the effects of methyl jasmonate and LED lights as two elicitors on physiologic and secondary metabolites in the roots of 30-day-old licorice seedlings in MS media were investigated. In this study, concentrations of zero, 0.2, 0.5, 1 and 2 μM methyl jasmonate as well as blue, red and blue+red light treatments, were used in three replications in a completely randomized design. The results showed that flavonoid content at wavelengths of 300 nm at a concentration of 1 μM methyljasmonate showed a significant increase compared to the control. According to results, the amount of phenolic compounds in methyl jasmonate treatment increased at a concentration of 1 μM and in blue light treatment. The highest activity of phenylalanine ammonialyase was observed in blue light, but the greatest amount of glycyrrhizin (12.10 µg/g FW) was recognized in red light treatment. Also, red light significantly increased the growth and proliferation of plants compared to other treatments. In general, it can be concluded that the use of stimulants such as methyl jasmonate and red and blue lights increases the amount of secondary metabolites in medicinal plants.
, Jamshid Ghorbani, Babak Motesharezadeh, Seyed Mohammad Hodjati, Ghorban Vahabzadeh,
Volume 12, Issue 54 (vol. 12, no. 54 2023)
Abstract
This study was conducted to investigate the potential of copper (Cu) absorption and accumulation and the effects of its contamination on the growth and mineral nutrient content of Artemisia absinthium and Silybum marianum under greenhouse conditions. This was done under factorial experiment based on a completely randomized design and Copper sulfate (CuSO4.5H2O) solution was added to the pots with three replicates at 0 (control), 100 and 200 mg/kg and then seeds of two plant species were sown. Plant harvesting was done after two months when growth was completed and then plant growth characteristics and mineral elements (Ca, Mg, K, P, Fe, Zn, Mn, and Cu) were measured for roots and shoots. The results showed that there was no effect of copper sulfate stress on roots and shoots of A. absinthium while shoot biomass and root volume, area and length of S. marianum were significantly reduced. The Cu accumulation in roots of both plant species and in shoots of S. marianum significantly increased by increasing the copper sulfate in soil. The highest level of Cu accumulation was found in shoots and roots of S. marianum with 53.50 and 168.72 mg/kg dry matter, respectively. A transfer factor less than one for both plants indicated their ability to copper accumulation in the roots. Potassium content in the shoot of S. marianum was significantly greater than that in A. absinthium at treatment of 200 mg/kg. There was no effect of copper sulfate stress on the micronutrients content of A. absinthium while it caused a significant decrease in Mn and Zn in shoot and root of S. marianum, respectively, and a significant increase in Fe in the shoot of S. marianum.
Sara Ghorbanihashli, Marjan Diyanat, Marzieh Ghanbarijahromi,
Volume 13, Issue 60 (vol. 13, no. 60 2024)
Abstract
Among the factors that reduce the production of agricultural products, weeds are of particular importance, which lead to huge losses in agriculture. In order to investigate the competition of lambsquarters weed with parsley medicinal plant, a factorial experiment was conducted in the form of a completely random basic design with three repetitions in the greenhouse of Damavand Technical and Vocational School in 1402. Experimental treatments include different levels of weed germination time (7 days before parsley sprouting, simultaneously, 7, 14 and 21 days after parsley sprouting) and plant density (zero, 1 and 2 parsley plants in the pot). The results of the experiment showed that plant height, fresh and dry weight of shoot, yield per unit area (pot), petiole diameter, absorption of nutrients and vitamin C were affected by the time of germination and weed density. The lowest amount of studied traits was observed in the treatment of 7 days, early greening of lambsquarters. The highest percentage of essential oil (0.94%) in the 21-day greening treatment of lambsquarters and the lowest percentage of essential oil were related to the greening time of -7 and 0 days, which were statistically classified in the same category. Also, the highest percentage of essential oil (0.98%) was related to the treatment of zero density of lambsquarters (control), and the lowest (0.64%) was related to the density of lambsquarters 2 plants in a pot. Therefore, it is recommended to plant parsley early so as not to reduce its quantitative and qualitative yield, although weed density should not be neglected.
