En
  • دکتری (1387)

    علوم باغبانی - بیوتکنولوژی

    هانوفر، هانوفر، آلمان

  • کارشناسی‌ارشد (1378)

    مهندسی کشاورزی- باغبانی

    تربیت مدرس، تهران، ایران

  • کارشناسی (1375)

    مهندسی تولیدات گیاهی

    تهران، تهران، ایران

  • ترانسکریپتوم متابولیت های ثانویه
  • شناسایی ژنهای ناشناخته بیان شده در شرایط محیطی و نموی
  • اصلاح و بیوتکنولوژی گل و گیاهان زینتی
  • فیزیولوژی گل و گیاهان زینتی

    دکتر نیما احمدی در سال 1348 در روستای درودزن از توابع شهرستان مرودشت بدنیا آمد. در سال 1375 مقطع کارشناسی ناپیوسته در رشته مهندسی تولیدات گیاهی را در دانشگاه تهران به پایان رساند و در سال 1376 در مقطع کارشناسی ارشد مهندسی باغبانی در دانشگاه تربیت مدرس پذیرفته شد. پس از موفقیت در آزمون دکتری اعزام به خارج از کشور در سال 1380 ، با استفاده از بورس تحصیلی وزارت علوم، تحصیل خود را در مقطع دکتری در سال 1382 در دانشگاه هانوفر آلمان شروع نمود. وی پس از فراغت از تحصیل در سال 1387 به ایران بازگشت و تا زمان حاضر در دانشگاه تربیت مدرس مشغول به فعالیت میباشد.

    ارتباط

    رزومه

    Corrigendum to “Isolation and expression patterns of two novel senescence-associated genes RhAA and RhCG in rose (Rosa hybrida)”[Postharvest Biol. Technol. 152 (2019) 60–64]

    M Bayanati, K Razavi, A Tehranifar, T Lohrasebi, SH Neamati, N Ahmadi
    Journal PapersPostharvest Biology and Technology , Volume 176 , 2021 June 1, {Pages 111509 }

    Abstract

    We hereby express our deepest regret at the incorrect address of the sponsor of the research. In this regard, the address should be changed to “The present study was supported by grants from the National Institute of Genetic Engineering and Biotechnology (NIGEB), Iran, No. 314 and Center for International Scientific Studies & collaboration (CISSC) of Ministry of Science, Research and Biotechnology of IR. Iran.”

    Effects of 1MCP and ethylene on preservation of quality and vase life of Alstroemeria (cvs. Hercules and Mayfair) cut flowers.

    Amin Nasiri, N Ahmadi, G Movahed
    Journal PapersAdvances in Horticultural Science , Volume 34 , 2020 April 2, {Pages }

    Abstract

    In order to improve the vase life characteristics and postharvest quality of Alstroemeria cut flowers cv. Hercules and Mayfair, the effects of 1methylcyclopropene (1MCP) and ethylene have been investigated in a completely randomized design with three replications. First, cut flowers were fumigated at 0, 0.5, 1 and 1.5 ?L L1 of 1MCP concentrations for 24 h and then exposed to 1 ?L L1 of ethylene for 18 h. This experiment was conducted at 20?2 C, 6065% RH, and a 12/12 h light/dark photoperiod. The results showed that 1MCP treatment significantly increased postharvest durability in both cultivars, compared to the control. Also, results of 1MCP treatment on leaf chlorophyll index in both cultivars, confirmed the role of 1MCP in preventing exter

    Effect of bio-priming with plant growth promoting bacteria on growth and biochemical characteristics, phenol, flavonoid, vitamin C and nitrate in lettuce (Lactuca sativa L?…

    N Ahmadi, H Fatemi, B Esmaielpour, AA Soultani-Tolarood
    Journal PapersJournal of Science and Technology of Greenhouse Culture , Volume 11 , Issue 2, 2020 January , {Pages }

    Abstract

    see more details L. Cv Rabicon.) in a factorial arrangement based on completely randomized design with four replications. Experimental treatments included organic fertilizers organic fertilizers Subject Category: Commodities and Products

    Effect of Bio-Priming with Plant Growth Promoting Bacteria on Growth and Biochemical Characteristics, Phenol, Flavonoid, Vitamin C and Nitrate in Lettuce (Lactuca sativa L …

    H Fatemi
    Journal Papers , , {Pages }

    Abstract

    Expression patterns analysis of SOD genes in responses to ethylene-induced oxidative stress in rose (Rosa hybrida) during flower development

    M Bayanati, A Tehranifar, K Razavi, SH Nemati, T Lohrasebi, N Ahmadi
    Journal PapersSouth African Journal of Botany , Volume 127 , 2019 December 1, {Pages 265-270 }

    Abstract

    Superoxide dismutases (SODs) are known as the first line of defense against reactive oxygen species (ROS). To better understand the regulatory effect of ethylene on programmed cell death and the molecular functions of SODs during the flower development, the expression patterns of RhMnSOD1, RhFeSOD1 and Cu/ Zn SOD1 genes, as well as the total SOD activities were compared in the two different roses, of ‘Marroussia’ and ‘Cool Water’ with long and short longevities, respectively. Total SOD activities were increased at the bud stage after 24?h of ethylene treatment also, H2O2 content increased at the bud stage at 48 h after the ethylene treatment in both cultivars. In most tissues, RhMnSOD1 and RhFeSOD1genes showed the highest levels o

    Isolation and expression patterns of two novel senescence-associated genes RhAA and RhCG in rose (Rosa hybrida)

    M Bayanati, K Razavi, A Tehranifar, T Lohrasebi, SH Neamati, N Ahmadi
    Journal PapersPostharvest Biology and Technology , Volume 152 , 2019 June 1, {Pages 60-64 }

    Abstract

    The functional life and marketability of flowers is restricted by senescence and /or abscission. Many senescence-associated genes have been identified in the Arabidopsis plant. In this research, we isolated two full length clones of RhAA and RhCG in rose (Rosa hybrida) and compared the expression patterns of these genes in cultivars with short (‘Cool Water’) and long (‘Marroussia’) shelf lives. The RhAA gene is more similar to unknown proteins Cucurbita maxima, Gossypium arboretum and senescence-associated protein Medicago truncatula, while the RhCG is closer to the unknown proteins Pisum sativum and Dendrobium catenattum. The results of quantitative real-time polymerase chain reaction (qRT-PCR) analysis showed that the RhAA was exp

    Surface wave excitations in collisional inhomogeneous over-dense plasma

    S Miraboutalebi, MK Khadivi Boroujeni, L Rajaei, N Ahmadi
    Journal PapersIranian Journal of Physics Research , Volume 15 , Issue 1, 2019 November 26, {Pages 63-70 }

    Abstract

    An investigation isundertaken to study the transmission of the electromagnetic waves through inhomogeneous over-dense plasma. The transmission is due to the excitation of the surface modes of plasma or plasmons. The construction of the plasma is in such a way that the charge density of the plasma linearly increases and passes through its critical value and then linearly decreases. The dissipative effects are considered for the plasma. The amplitude of the electromagnetic waves and the reflection coefficient are calculated and then the distribution of the electric field amplitude of the entire structure is obtained and discussed. In this way, itis shown that the considered structure facilitates the anomalous wave transmission through over-de

    Flavonoids profile and antioxidant activity in flowers and leaves of hawthorn species (Crataegus spp.) from different regions of Iran

    Abolfazl Alirezalu, Peyman Salehi, Nima Ahmadi, Ali Sonboli, Serena Aceto, Hamid Hatami Maleki, Mahdi Ayyari
    Journal PapersInternational journal of food properties , Volume 21 , Issue 1, 2018 January 1, {Pages 452-470 }

    Abstract

    This study was undertaken to determine the total quantity of phenolic and flavonoids, as well as to find out about the HPLC quantification of some individual phenolic compounds (i.e. chlorogenic acid, vitexin 2”-O-rhamnoside, vitexin, rutin, hyperoside, quercetin, and isoquercetin) in flowers and leaves of 56 samples of different hawthorn species (Crataegus spp.) collected from different geographical regions of Iran. The amount of total phenolics ranges from 7.21 to 87.73?mg GAE/g in dry weight of the plant, and the total amount of flavonoids varied amongst species and in different plant organs ranging from 2.27 to 17.40?mg/g dry weight. Chlorogenic acid, vitexin, and vitexin 2”-O-rhamnoside were found to be the most abundant phenolic c

    Comparison of volatile compounds at various developmental stages of tuberose (Polianthes tuberosa L. cv. Mahallati) flower with different extraction methods

    Marzieh Ahmadian, Nima Ahmadi, Alireza Babaei, Mohammad Reza Naghavi, Mahdi Ayyari
    Journal PapersJournal of EssEntial oil rEsEarch , Volume 30 , Issue 3, 2018 May 4, {Pages 197-206 }

    Abstract

    Tuberose volatile components were evaluated at four developmental stages of flowers extracted by Hydrodistillation Extraction (HE), Solvent-Assisted Hydrodistillation Extraction (SAHE), Accelerated Organic Solvent Extraction (AOSE) and Organic Solvent Extraction (OSE). Among the total number of 37 compounds, benzenoids such as benzyl benzoate via AOSE and OSE seemed to have the highest values at Fully Opened stage (FO). In addition, FO showed the highest total amount of sesquiterpenoids extracted by all tested methods. Half-opened stage (HO) had the highest values of monoterpenoids such as 1,8-cineole in all methods of extraction, and benzenoids such as methyl benzoate from SAHE. Unopened bud (UO) and Nearly Slight Opened bud (NSO) stages s

    Physiological, phytochemicals and molecular analysis of color and scent of different landraces of Rosa damascena during flower development stages

    O Rasouli, N Ahmadi, S Rashidi Monfared, F Sefidkon
    Journal PapersScientia Horticulturae , Volume 231 , 2018 January 27, {Pages 144-150 }

    Abstract

    Rosa damascena is one of important flowers for the production of aromatic compounds mainly used in perfume industry. In this research, complete sequences of gene coding geranylgeranyl diphosphate synthesis (GGPPS) involved in monoterpenes biosynthesis pathway was isolated from Rosa damascena “Kamoorˮ, and the relative expression of genes GGPPS, DXR, and CCD1 was characterized during flower developmental stages (A, B and C) in petals of four landraces of damask roses (Ghalhar, Lavasanat, Kamoor and Minab) by real-time quantitative fluorescence PCR. The overall expression of GGPPS gene was lower as compared with those of gene CCD1 and DXR. To further study, comprehensive analysis were done among physiological, molecular and phytochemical r

    Effect of methyl jasmonate fumigation on physio-biochemical characteristics and postharvest quality of gerbera cut flowers cv. pink elegance.

    M Sadeghi, N Ahmadi, N Safaei, I Rahmani
    Journal PapersJournal of Crops Improvement , Volume 19 , Issue 4, 2018 January , {Pages }

    Abstract

    see more details of gerbera cut flower was investigated in this experiment. This research was conducted as a split-plot experiment based on completely randomized design with three replications at the laboratory of the postharvest physiology, College of Agriculture, Tarbiat Modares University in 2013. Gerbera flowers were harvested at early morning from a commercial greenhouse and cut flower stems were put in a preservative solution containing 200 mg/L 8-hydroxyquinoline sulfate and sucrose 3%, exposed to 0, 0.1, 0.2 and 0.3 ?lL-1 MeJA with 20 ?lL-1 ethanol and control for 24 h. The results showed that MeJA significantly increased vase life and improved postharvest characteristics of cut gerbera flowers. MeJA 0.2 ?lL-1 treatment extended the

    Packaging methods and storage duration affect essential oil content and composition of lemon verbena (Lippia citriodora Kunth.)

    Mohammad‐Taghi Ebadi, Fatemeh Sefidkon, Majid Azizi, Noorollah Ahmadi
    Journal PapersFood science & nutrition , Volume 5 , Issue 3, 2017 May , {Pages 588-595 }

    Abstract

    Changes in essential oils (EOs) content and composition of lemon verbena leave at different packaging methods (packaged with air, nitrogen, or under vacuum) and during storage period (0, 2, 4, 6 and 8?months) were determined. All the samples were hydrodistilled every 2?months during storage for EO content evaluation. EO composition was determined by gas chromatography and gas chromatography–mass spectrometry. The results showed that by extending the storage period in all packaging methods, EO content was significantly decreased. Parallel to the increase in the storage duration in all packaging methods, citral content was decreased, whereas the amounts of limonene and 1,8‐cineole were increased. Packaging of lemon verbena leaves with ni

    Improvement of postharvest quality of Asian pear fruits by foliar application of boron and calcium

    Kobra Khalaj, Nima Ahmadi, Mohammad Kazem Souri
    Journal PapersHorticulturae , Volume 3 , Issue 1, 2017 March , {Pages 15 }

    Abstract

    The aim of this study was to evaluate the effects of foliar application of boron and calcium on postharvest storage characteristics of Asian pear (Pyrus pyrifolia) fruit. This experiment was carried out in the experimental orchard of Asian pear at Tarbiat Modares University, Tehran, Iran. The treatments were two concentrations of boric acid (0% and 0.5%) and three concentrations of calcium chloride (0%, 0.5%, and 0.7%) which were sprayed on trees during the growing season. The data showed that foliar application of these two elements resulted in improvement in physicochemical characteristics of the pear fruit, particularly fruit firmness and polyphenol oxidase activity. At harvest, fruit firmness and total soluble solids (TSS) were signific

    Genome size diversity of some species of Cephalanthera from Iran

    Marzieh Ahmadian, Alireza Babaei, Nima Ahmadi, Omid Rasoli
    Journal PapersCaryologia , Volume 70 , Issue 3, 2017 July 3, {Pages 206-210 }

    Abstract

    Knowledge of genome size is used in a wide variety of biological fields such as cell and molecular biology, ecology, phytogeography, systematics, development of genome sequencing projects and for comparative studies of genome structure and evolution as a key diversity characters. Orchidaceae is the most variable angiosperm family, with 168-fold differences in genome size. This research was begun because of a lack of DNA content data from a genus of terrestrial orchids, Cephalanthera, in Iran. To estimate the nuclear DNA content (2C value) of three species of Cephalanthera, a flow cytometric study was conducted with young and well-developed leaves of plants collected from their natural habitats in Gilan and Mazandaran provinces of Iran. The

    Evaluation of the ethylene effect on display quality and expression of some senescence related enzymes in potted miniature rose

    A Ranjbar, N Ahmadi
    Journal PapersVII International Symposium on Rose Research and Cultivation 1232 , 2017 July 2, {Pages 105-110 }

    Abstract

    To investigate the effects of exogenous application of ethylene postharvest quality and expression of enzyme involved in leaf abscission, this research was conducted in a completely randomized experimental design with three replications and three levels of ethylene treatment. Whole plants of potted miniature rose cultivar.‘Sanaz-e-Zard’were exposed to 0, 5 and 10 μL L-1 of concentration of ethylene for 12 h in sealed glass aquarium containers. Results showed that treatment of ethylene had significant effects on the physiological and biochemical characteristics of ‘Sanaz-e-Zard’. The higher leaf abscission and activity of laccase was observed in 10 μL L-1 of ethylene, which was significantly (P< 0.01) higher than the control, while

    Improvement of in vitro micro propagation of Rosa damascena genotypes

    Mohamad Omidi, Abbas Yadollahi, Noorollah Ahmadi, Farhad Beyranvand
    Journal PapersIranian Journal of Horticultural Science , Volume 47 , Issue 4, 2017 January 1, {Pages 773-784 }

    Abstract

    Rosa damascena is one of the most important Aromatic plants in the world. The extracted oil from the petals of the flowers is used in the pharmaceutical, cosmetic and food industries. Traditional methods to propagate this plant have problems such as transfer of pollution agents and limited native plants. Due to more advantages of the in vitro proliferation in compared to traditional methods, this study designed to evaluate impression different medium cultures with diverse hormone levels to improve the proliferation and control of shoots chlorosis. In this research we used medium cultures of MS and mMS (mMS0, mMS1, mMS2, mMS3, mMS4 and mMS5). In order to establishment in MS medium, nodal segments containing 1 or 2 lateral buds were cultured.

    Evaluation of Some Postharvest Storage Approaches on Essential Oil Characteristics of Fresh Organic Damask Rose (Rosa damascena Mill.) Flowers

    Maryam Mirzaei, Nima Ahmadi, Fatemeh Sefidkon, Abdolali Shojaeiyan, Alireza Mazaheri
    Journal PapersHorticulturae , Volume 3 , Issue 1, 2017 March , {Pages 16 }

    Abstract

    Damask rose (Rosa damascena Mill.) is an economically important species in the Rosaceae family for rose oil and rose water production, obtained exclusively from freshly-gathered Damask rose flowers. Iran is famous for producing organic rose essential oil, mainly used in the perfume industry and for folk medicines due to its healing properties. Due to their high perishability, postharvest handling of the flowers prior to oil extraction are a key point in rose essential oil production. In this study, postharvest handling conditions of Damask rose flowers were evaluated for the effect on yield and quality of the extracted essential oils. Organically-grown flowers were stored under different conditions included packaging in polyethylene bags an

    Field and microscopic studies of self and cross-incompatibility in two Damask rose ecotypes.

    Gholamhasan Movahed, Nهئش Ahmadi, Ahmad Moieni, Amin Nasiri
    Journal PapersJournal of Crops Improvement , Volume 19 , Issue 2, 2017 January , {Pages }

    Abstract

    In order to evaluate self and cross-incompatibility in two ecotypes of Damask rose (Rosa damascena rosa damascena Subject Category: Organism Namessee more details Mill.), this experiment was performed based on randomized complete block design (RCBD) with four replications at the research field of Tarbiat Modares University in 2012-2013. In this experiment, twice pollinations were performed 24-hour interval, after doing in vitro testing pollen grain germination. Pollens collected from Kashan and Azaran ecotypes and Dog rose (Rosa canina) were applied as pollinizer for self-and cross-artificial pollination on both ecotypes. Determination of self and cross incompatibility were conducted with two methods of field controlled pollination and micr

    Damask rose (Rosa damascena Mill.) essential oil is affected by short-and long-term handling

    Maryam Mirzaei, Fatemeh Sefidkon, Noorollah Ahmadi, Abdolali Shojaeiyan, Hossein Hosseini
    Journal PapersIndustrial Crops and Products , Volume 79 , 2016 January 1, {Pages 219-224 }

    Abstract

    Damask rose cultivated for essential oil production mainly used in perfume industry. Due to the highly perishable flowers, post-harvest handling of the flowers prior to oil extraction would be considered as a key point in rose essential oil production. Evaluating the effects of various storage conditions on the yield and quality of the Damask rose essential oil (EO), the petals were stored under three conditions included packaging in LDPE and poly-film PET/EVOH/LDPE bags and immersing inside the water containers at room temperature (RT) or refrigerator (4??C) for 1–3 days (short-term storage). Throughout the prolonged handling (for 7, 14 and 21 days), packed petals using the PET/EVOH/LDPE bags were evaluated under frozen, active and passi

    Increasing Postharvest Longevity and Improving Physiological Characteristics of Cut Flowers Dianthus caryophyllus cv. Fortune by Applying 1-MCP

    Azam Ranjbar, Noorollah Ahmadi
    Journal PapersJournal of Flower and Ornamental Plants , Volume 1 , Issue 1, 2016 April 10, {Pages 17-27 }

    Abstract

    The effects of 1-MCP and ethylene on the display quality and vase life of Dianthus caryophyllus cv. Fortune were investigated. Cut flowers were treated with 1-MCP at different concentrations (0, 0.5, 1 and 1.5 ?l l-1) for 24 h and then exposed to 1 ?l l-1 ethylene for 16 h. The results showed that 1-MCP had significant effect on the physiological characteristics such as total postharvest longevity, vase life, uptake of vase solution and relative fresh weight of cut carnation flowers. 1-MCP treatment did not show significant effect on flower diameter, although the effects of treatment over time, was significant (P< 0.01). Maximum postharvest longevity and vase life were observed in samples treated with 1.5 ?l l-1 1-MCP. The results showed th

    دروس نیمسال جاری

    • دكتري
      مباحث نوين در فيزيولوژي گياهان زينتي ( واحد)
      دانشکده کشاورزی، گروه باغباني
    • كارشناسي ارشد
      به نژادي و بيوتكنولوژي گياهان دارويي ( واحد)

    دروس نیمسال قبل

    • كارشناسي ارشد
      بيوتكنولوژي گياهي ( واحد)
      دانشکده کشاورزی، گروه باغباني
    • كارشناسي ارشد
      فيزيولوژي پس از برداشت تكميلي ( واحد)
    • دكتري
      روش هاي تشخيص ملكولي ( واحد)
    • 1397
      طهماسبي كلجاهي, سحر
      اثرات اسيد ساليسيليك بر ويژگي‌هاي فيزيولوژيكي و بيوشيميايي مرتبط با عمر گلجايي وكنترل پوسيدگي خاكستري(Botrytis cinerea) گل شاخه بريده رز
    • 1397
      قنبري, شيما
    • 1397
      موسوي احمدابادي, سيدمحمد
    • 1394
      كريمي, معصومه
      اثرات كيفيت نور و منابع مختلف نيتروژن بر رشد و گلدهي گل راعي (Hypericum perforatun)با ارزيابي برخي صفات مورفولوژيك و فيزيولوژيك و مولكولي
    • مدیر گروه بیوتکنولوژی کشاورزی
      داده ای یافت نشد

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