Browsing by Author "Tehranifar, Ali"
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Item Effect of drought stress and paclobutrazol- treated seeds on physiological response of festuca arundinacea L. master and lolium perenne L. barrage(Uludağ Üniversitesi, 2011) Shahrokhi, Mahsa; Tehranifar, Ali; Hadizadeh, Haniye; Selahvarzi, YahyaTo study interaction between drought stress and pachlobutrazol as treated seeds before planting, seeds of Festuca arundinacea L. Master and Lolium perenne L. Barrage were soaked with 0, 20, 30 and 40 mg.L-1 paclobutrazol for 24 h on shaker during imbibitions stage of seed germination. Treated seeds were sowed in the pots. After 102 days, when the seedlings well established, drought stress was applied in 50% field capacity (FC), 25% FC and well-watered. Interaction effect of Paclobutrazol × drought stress × cultivar was significant on relative water content (RWC). Drought stress increased electrolyte leakage whereas the highest concentration of paclobutrazol reduced EL. The highest total chlorophyll content was observed in Master at wellwatered however at 25% FC in Barrage the lowest chlorophyll content is resulted. Paclobutrazol 40 mgL-1 was the highest total chlorophyll content. Festuca arundinacea L. Master at 25% FC Was the highest proline content. All paclobutrazol concentrations in Festuca arundinacea L. Master resulted higher proline content. Paclobutrazol 20 mgL-1 at 25% FC had higher shoot dry weight. The highest root dry weight resulted in Barrage at well-watered with 30 mgL-1 paclobutrazol. Root length was the highest in well-watered and lower in 25% FC.Item Effect of essential oils, ethanol and methanol to extend the vase-life of carnation (dianthus caryophyllus L.) flowers(Uludağ Üniversitesi, 2011) Fariman, Zahra Karimian; Tehranifar, AliIn this study we investigated the effect of some essential oils, ethanol and methanol as novel and old antimicrobial agents (respectively) in extending the vase-life of Carnation (Dianthus caryophyllus L.) flowers. Cut flowers of carnation were kept in solution containing essential oils of Thyme, Black cumin and Peppermint (50 and 100 mgL−1 ), ethanol, methanol (4, 7 and 10%) and control. Data showed just solution containing ethanol 7% could increase flower longevity than control. Vase life and flower fresh weight losses in solution containing essential oils didn’t have significantly difference than control, ethanol and methanol. Maximum solution uptake was observed for flower kept in solution containing ethanol 4%. Totally our results suggest the application of ethanol and methanol in preservative solutions for carnation flowers.Item Effect of ethanol, methanol and essential oils as novel agents to improve vase-life of alstroemeria flowers(Uludağ Üniversitesi, 2011) Bazaz, Azadeh Mousavi; Tehranifar, AliThe production of Alstroemeria flowers has been rapidly increasing in the world. In this research effect of different concentrations of ethanol (4, 7, 10%) methanol (4, 7, 10%) as pulse treatments and some essential oils (50 or 100 mg L−1 peppermint (Mentha piperata L.), thyme (Thymus vulgaris L.) and black cumin (Bunium persicum (Boiss.) B. Fedtsch)) on flower longevity, solution uptake, fresh weight and SPAD value as a measure of leaf greenness of Alstroemeria peruviana ‘santorini’ were analyzed. Results showed alcohol treatments had no positive effect on increasing vase life of Alstroemeria. Applying essential oils could extend the vase-life. The greatest longevity of vase life was related to 50 mg L−1 of thyme essential oil treatment and approximately it improved inflorescence cut vase life more than 2 days longer than control treatment. The greatest solution uptake and decrease in fresh weight were seen in 100 mg L−1 peppermint essential oil and 100 mg L−1 thyme essential oil, respectively. Essential oils could not maintain SPAD value in higher amount than control treatment but these compounds particularly 50 mg L−1 thyme, peppermint and black cumin essential oil are useful for increasing vase life of Alstroemeria.Item Effect of humic acid on nutrient uptake and physiological characteristic fragaria ananassa var: Camarosa(Uludağ Üniversitesi, 2012) Ameri, Atefe; Tehranifar, AliThe investigation was carried out for evaluation effects of humic acid fertilizer on nutrient uptake (N, P, and K) and physiological characteristics of Fragaria ananassa var: Camarosa. Experiment treatments included different concentration of humic acid (0, 10, 20, 30 and 40 ppm) with two methods of application (fertigation and spray). Result of experiment showed that there is highest amount of N in fertigation in concentration of 20 ppm and there are highest of Phosphorus, potassium and amount of assimilation in concentration of 10 ppm. In spray method there are highest amount of N and chlorophyll in concentrations of 10 and 20 ppm and there is potassium in concentration of 10 ppm.Item Effects of essential oils to control rhizopus stolonifer in vitro and in vivo on strawberry(Uludağ Üniversitesi, 2014-07-05) Mohammadi, Samane; Aroiee, Hossein; Aminifard, Mohammad Hossein; Tehranifar, Ali; Jahanbakhsh, VahidThe aim of this study was to evaluate the antifungal effects of essential oils (fennel, black caraway and anis) at different concentrations against the fungal pathogen, Rhizopus stolonifer, the causal agent of smooth rot disease of strawberry (Fragaria ananassa Duch.) under in vitro and in vivo conditions.The results of in vitro showed the growth of R. stolonifer was completely inhibited by the application of fennel, anis and black caraway oils at concentrations 600 and 800 ΜL.L -1 , respectively. The results of in vivo indicated that fennel, anis and black caraway oils at all applied concentrations inhibited R. stolonifer growth on strawberry fruits compared with control. Also the mentioned oils at upper concentrations showed positive effects on fruit quality characteristics like titrable acidity, total soluble solids, anthocianin content, ascorbic acid and weight loss percentage. These essential oils inhibited to infection fruits by R. stolonifer and increased life storage fruits. The present research confirms antifungal effects of these essential oils of both in vitro and in vivo on fruit postharvest.Item The effects of shrub pruning and fruit thinning on seed germination and seedling of tomato in the next generation lycopersicon esculentum mill(Uludağ Üniversitesi, 2011) Tabasi, Atefeh; Nemati, Hossein; Tehranifar, Ali; Akbari, MohammadSeed is the main principle of agricultural products and it has a key role as first consumable input to transfer genetic Characters. In this investigation the effects of cultivar, shrub pruning and fruit thinning on qualitative and quantitative characteristics of tomato (seed and seedling) have been evaluated. Experiment was performed by factorial analysis (3×2×3) with 5 replications in completely randomized design (CRD). First treatment was three cultivars of tomato, second treatment was two styles of shrub pruning, in which all of subsidiary branches are removed (Type 1) and one cluster and leaf on subsidiary branches are remained and then extras removed (Type 2) and Third treatment was fruit thinning. Each tomato cultivar was fruit thinned to three different levels (4, 5 and 6 fruit for each plant). The results showed that all treatments had significant influence on weight of 1000 seeds for the next generation. The effects of cultivar and fruit thinning were significant on germination percentage. But shrub pruning did not affect the germination percentage of seeds. Also effects of cultivar and fruit thinning were considerable on fresh and dry weight of seedling root and stem. The effect of fruit thinning and cultivar were significant on height and the number of seedling leaflet. Totally fruit thinning and shrub pruning had a vital role in increasing qualitative and quantitative characteristics of seed and seedling.Item The effects of substrate and cultivar in quality of strawberry(Uludağ Üniversitesi, 2012) Ameri, Atefe; Tehranifar, Ali; Davarynejad, Gholam Hossein; Shoor, MahmoudThe investigation was carried out to evaluate the effects of substrate and cultivar on biochemical characteristics of strawberry in soilless culture system. The experiment was conducted in a factorial experiment based on randomized complete design with four replications. Experimental treatments consisted of three strawberry cultivars (Camarosa, Mrak, and Selva) and six substrates (Rice hull, Sycamore pruning waste, Cocopeat + Perlite (50:50), Vermicomposts + Perlite + Cocopeat (5:45:50), (15:40:45), (25:35:40). Results of this experiment showed that the highest percentage of malformed fruits was observed in Selva cultivar in Rice hull (48.46%) and Camarosa cultivar in vermicompost + perlite + cocopeat (25:35:40) (48.46%), the highest of total anthocyanin content in Camarosa in vermicompost + perlite + cocopeat (15:40:45) (222.65 mg/100g), the highest of antioxidant in Camarosa and Mrak cultivars in substrates of Sycamore pruning waste and cocopeat + perlite (50:50) respectively (58.76% and 62% respectively), the highest of TSS in Selva in vermicompost + perlite + cocopeat (5:45:50) (8.66), the highest of Vitamin C in Selva in vermicompost + perlite + cocopeat (15:40:45) (108.05 mg/ 100cc), the highest of TA in Camarosa in vermicompost + perlite + cocopeat (5:45:50) (2.87 mg/100g). Response of each cultivar was different in each substrate. Therefore, the substrate affects on quality of fruit in strawberry and suitable choice of substrate is caused to production of desirable fruit.Item How may trichoderma application affect vegetative and qualitative traits in tulip darwin hybride cultivar(Uludağ Üniversitesi, 2011) Mazhabi, Morteza; Nemati, Hossein; Rouhani, Hamid; Tehranifar, Ali; Moghadam, Esmat Mahdikhani; Kaveh, HamedTo study the effect of Trichoderma harzianum Bi on qualitative and quantitative traits of tulip including stem length and diameter, bud diameter, petal length, bulb perimeter and bulblet number, an experiment based on completely randomized design with 8 replications were completed in situ. Main media mixture was 40% of coco peat+ 40 of field soil+ 20% of perlite. Treatments included enriched coco peat with trichoderma in different concentrations (0, 20, 50 and 100%) of total coco peat. Results showed that 100 and 50% of enriched coco peat significantly increased stem length and diameter. These treatments also had an effect on bud diameter significantly. Petal length was also affected by 100% of enriched coco peat treatment in comparison to control. All treatments (20, 50 and 100%) had a significant effect on bulblet appearance in both mature and immature bulbs. Mature bulb perimeter was significantly affected by all treatments although immature bulb perimeter was only affected by 50 and 100% treatments. Flower bud formation in immature bulbs which was treated with 50 and 100% of enriched coco peat increased significantly in comparison to control. Totally it seems that trichoderma increases tulip cut flower quality traits and induces maturity in immature bulbs.Item In vitro culture of carnation (Dianthus caryophyllus L.) focusing on the problem of vitrification(Uludağ Üniversitesi, 2011) Kharrazi, Mahdiyeh; Nemati, Hossein; Tehranifar, Ali; Bagheri, Abdolreza; Sharifi, AhmadThis study was conducted to evaluate the effect of plant growth regulators on in vitro shoot multiplication, vitrification and rooting of two carnation cultivars (Eskimo Mogr and Innove Orange Bogr). Isolated axillary buds were cultured on MS medium supplemented with different levels of Benzyl amino purine (BAP) or kinetin (Kin) in combination with 0.2 mg/l NAA and shoot multiplication and vitrification rate were tested. Then different concentrations of Naphthalene acetic acid (NAA) or Indole butyric acid (IBA) on root induction of regenerated shoots were surveyed. Shoot regeneration and vitrification were influenced by the cultivar, kind of cytokinin and its concentration. Eskimo Mogr produced more shoots in comparison with Innove Orange Bogr (6.17 and 3.83 shoots/explant, respectively). BAP-containing media had more shoot multiplication and vitrification than Kin and by increasing the concentration of cytokinin, shoot multiplication and vitrification increased. There was a negative correlation between plant height and internode length with vitrification (-77% and -85%, respectively). By considering the amount of multiplication and rate of vitrification for obtaining the highest number of normal shoots, MS medium containing lower concentration of BAP (1mg/l for Eskimo Mogr and 2 mg/l for Innove Orange Bogr) and 0.2 mg/l NAA is recommended. Rooting of regenerated shoots was dependent on the cultivar. The highest root percentage for Eskimo Mogr (83%) was achieved on the medium supplemented with 0.5 mg/l NAA, while for Innove Orange Bogr (98%) it was obtained on the medium containing 1.5 mg/l IBA.Item Regeneration of two sweet cherry cultivars cvs. "bing" and "dovomras" in vitro(Uludağ Üniversitesi, 2015-10-08) Zamanipour, Mahbube; Tehranifar, Ali; Moghadam, Ebrahim Ganji; Abedi, BahramIn this article we will present the main aspects regarding the behavior of two Sweet cherry cultivars in the process of meristem culture in vitro. The effect of three growth media including WPM, MS and QL and three different hormone combinations contains BAP (0, 1 and 2 mgL-1 ), 0.5 GA3 and 0.1 IBA were investigated on the multiplication of two Sweet cherry cultivars "Bing" and "Dovomras". Cultures were maintained at 26°C under a 16 hr-light/8 hr-dark with a light intensity of 2000-3000 lux from white fluorescent light. After six weeks, the number and length of new shoots, plantlets quality and leaf number were recorded. This experiment was arranged in a completely randomized designed. The result showed that there were significant differences between cultivars for the number and the length of shoots. Also there was negative relationship between shoot number and length. The highest average new number (5.66) of shoot multiplication and Plantlets quality was obtained in WPM supplemented with 2 mgL-1 BAP in "Bing" cultivar and the highest average length of shoots (2.23 cm) and leaf number induced when was cultured on MS media obtained with 1 mgL-1 BAP in "Dovomras" cultivar. In general, Plantlets had better quality on the WPM medium in comparison with other media. The results showed that Sweet cherry was more stable and had a higher regeneration in micropropagation process based on morphological traits.Item Turfgrass seedling height and quality in paclobutrazol- treated seeds of lolium perenne l. barrage and festuca arundinacea l. master(Uludağ Üniversitesi, 2010) Shahrokhi, Mahsa; Tehranifar, Ali; Hadizadeh, Haniye; Selahvarzi, YahyaPaclobutrazol affects height and quality of seedlings of turfgrass specious. To determine the effect of paclobutrazol on seedling height and visual quality, seeds of Lolium perenne L. Barrage and Festuca arundinacea L. Master were soaked with 0, 20, 30 and 40 mgL-1 paclobutrazol for 24 h on shaker during imbibitions stage of seed germination. Treated seeds were sowed in the soil mixtures containing 70 percent gardening soil (with clay loam texture) and 30 percent sand (V/V). Pots had 41 cm height and 23 cm wide. Lower height at three stages of measured vegetative growth was resulted in Festuca arundinacea L. Master. Paclobutrazol resulted in lower height in three stage of vegetative growth. The interaction between cultivar and paclobutrazol concentrations was significant at 30 days after planting (DAP). Treatment of Festuca arundinacea L. Master with paclobutrazol 30 and 40 mgL-1 showed lower height at stage tree (30 DAP) while there were no significant difference in Lolium perenne L. Barrage. All of paclobutrazol treatment resulted lower wide of blade in Lolium perenne L. Barrage. Festuca arundinacea L. Master treated with 40 mgL-1 paclobutrazol had higher visual quality. It can be concluded that different cultivar could show different response to paclobutrazol treated on seed before planting. Festuca arundinacea L. Master treated with 40 mgL-1 may be more suitable to be used in this regard.