Showing 13 results for Seyed Sharifi
Raouf Seyed Sharifi, Sepideh Abbas Pour,
Volume 3, Issue 8 (vol.3, no.8 2014)
Abstract
In order to study the effects of nitrogen rates and seed inoculation with plant growth promoting rhizobacteria (PGPR) on quantitative and qualitative yield, root characterstics, leaf appearance rate and grain filling period of triticale, a factorial experiment was conducted based on randomized complete block design with three replications in research greenhouse of the faculty of Agriculture, University of Mohaghegh Ardabili in 2011. Factors were: nitrogen rates in four levels (0, 80, 160 and 240 kg N ha-1) as urea and seed inoculation with plant growth promoting rhizobacteria in four levels containing, without inoculation as control, seed inoculation with Azospirillum lipoferum strain OF, Psedomunas putida strains 41, and 9. Means comparison showed that maximum of grain yield (1.36 gr/per plant) was obtained at seed inoculation with Azospirillum lipoferum×160 kg N ha-1. Application of PGPR and increasing of nitrogen rates increased leaf appearance rate. Maximum of phyllochron (5.23 days) and the least of leaf appearance rate (0.191/day) was belonged to treatment compound of N0 × without inoculation seed with PGPR and it was vise versa in treatment compound of N240 × inoculation seed with Azospirillum. Rate and effective grain filling period were affected by nitrogen rates and seed inoculation with PGPR. Maximum of grain weight (0.0516 gr) and effective grain filling period (29.6 day) were obtained in seed inoculation with PGPR×160 kg N ha-1. It seems that in order to increasing of grain yield, leaf appearance rate, grain filling period and some traits be applied 160 kg N ha-1 × seed inoculation with Azospirillum lipoferum
Raouf Seyed Sharifi, Hossein Kamari,
Volume 4, Issue 13 (Vol. 4, No. 13, 2015 2015)
Abstract
Application of plant growth promoting rhizobacteria and foliar application of Nano-Zinc oxide are proper and cheap method for increasing of Triticale yield. So, in order to study of the effects of nano-zinc oxide and seed inoculation with plant growth promoting rhizobacteria (PGPR) on contribution of dry matter remobilization and stem reserves in grain yield, chlorophyll content, stomata conductance and some physiological indices of Triticale, a factorial experiment was conducted based on randomized complete block design with three replications in research greenhouse of the Faculty of Agriculture, University of Mohaghegh Ardabili in 2013. Factors were: foliar application of Nano-Zinc oxide at five levels (0 as control, 0.25, 0.5, 0.75 and 1 g/lit) and seed inoculation with plant growth promoting rhizobacteria in four levels (without inoculation as control, seed inoculation with Azotobacter chrocoococum strain 5, Azosprillium lipoferum strain OF and Psedomunas putida strain 9). The highest contribution of dry matter remobilization and stem reserves in grain yield was obtained at no application of Nano-Zinc oxide and no seed inoculation with PGPR. Means comparison showed that maximum of yield and yield components, chlorophyll content, stomata conductance, total dry matter and crop growth rate was obtained at application of 1 g/lit Nano-Zinc oxide×seed inoculation with Azotobacter and Azosprillium and minimum of they were recorded at no application of Nano-Zinc and no seed inoculation with PGPR. So, it can be suggested that in order to increasing of grain yield, chlorophyll content, stomata conductance and some physiological indices such as total dry matter and crop growth rate be applied seed inoculation of Triticale with Azotobacter and Azosprillium ×application of 1 g/lit Nano-Zinc oxide.
Raouf Seyed Sharifi, Fatemeh Afsari, Reza Seyed Sharifi,
Volume 6, Issue 19 (vol.6,no. 19, Year 2017 2018)
Abstract
In order to investigate application of nitrogen rates at different growth stages effects on dry matter remobilization and effective traits at dry matter accumulative of grain in spring barley (Hordeum Vulgare L.), an experiment was conducted as factorial based on randomized complete block design with three replications at the research farm, University of Mohaghegh Ardabili during 2012 cropping. Experimental factors were: nitrogen rates in four levels (0, 60, 120, and 180 Kg N.ha-1) as urea and nitrogen application at different growth stages in four levels (T0 at planting stage + at stem elongation ), (T1: at planting + stem elongation + at ear emergence stage), (T2: at planting + stem elongation + in ear emergence stage), (T3: at planting + stem elongation + ear emergence stage). Results showed that dry matter remobilization rate from stem, contribution of dry matter remobilization from shoot organs at grain yield, components of grain growth, nitrogen use efficiency, yield and yield components were significantly affected by experimental factors. Maximum of dry matter remobilization from stem and shoot organs was obtained in control treatment and the least of it were obtained in higher nitrogen rates as T1. The highest rate and grain filling period, yield and yield components was obtained in higher nitrogen rates as T1. Maximum of nitrogen use efficiency (31.45 kg/kg) was obtained in application of 60 kg N.ha 1 as T1 and the least of it (23.72 kg/kg) was obtained in higher nitrogen rates as T0. Based on the results, it was concluded that application of 180 kg N ha-1 as T1 can be recommended for profitable barley production in the study area.
Razieh Khalilzadeh, Raouf Seyed Sharifi, Jalal Jalilian,
Volume 6, Issue 21 (vol 6, no. 21 2017)
Abstract
In order to study the effects of cycocle and plant growth promoting rhizobacteria (PGPR) on yield, Chlorophyll fluorescence parameters and some physiological traits of wheat under water limitation condition, a factorial experiment based on randomized complete block design with three replications was conducted at the research farm of faculty of agricultural sciences, University of Mohaghegh Ardabili, during 2015-2016 cropping season. Factors were water limitation at three levels (full irrigation, irrigation to 50% of heading and booting stages, according with 45 and 59 Zadoks code respectively), seed inoculation with bio fertilizers at four levels (without inoculation as control, seed inoculation with Azotobacter chrocoocum strain 5, Pseudomonas putida strain 186 and inoculation with Azotobacter+ Pseudomonas) and foliar application of cycocle at four levels (0, 400, 800 and 1200 mg.lit-1). Means comparison showed that under water limitation condition, maximum photochemical efficiency of photosystem II ( ), chlorophyll content, relative water content, grain yield increased due to seed inoculation with PGPR and foliar application of cycocle compared to control treatment. In all of treatment compounds, leaf area index increased rapidly to 65 days after emergence, but from 65 days after emergence till harvest time, it decreased slowly. The highest grain yield was belonged to inoculation seed with Azotobacter and Pseudomonas, the high cycocle rates under full irrigation condition. Irrigation withholding in boot stage was caused the highest decline in chlorophyll fluorescence parameters and physiological traits of wheat. Foliar application of 1200 mg.lit-1 cycocle and seed inoculation with Azotobacter and Pseudomonas increased grain yield 63.41, 52.90 and 62.46% respectively at full irrigation, irrigation to 50% of heading and booting stages
Younes Kheirizadeh Arough, Raouf Seyed Sharifi,
Volume 7, Issue 23 (vol.7, no. 23 2018)
Abstract
In order to evaluation the effects of mycorrhiza, plant growth promoting rhizobacteria and nano zinc oxide foliar application on effective traits at grain filing of triticale under soil salinity condition, a factorial experiment was conducted based on randomized complete block design with three replications in research greenhouse of Faculty of Agriculture Sciences, University of Mohaghegh Ardabili in 2014. Factors experiment were included soil salinity in four levels (non-salinity, salinity 20, 40 and 60 mM NaCl), biofertilizers in four levels (no application of biofertilizers, application of mycorrhiza, Azotobacter chrocoocoum strain 5 + Psedomunas putida strain 186, both application PGPR + mycorrhiza) and nano zinc oxide in three levels (without nano zinc oxide, application of 0.4 and 0.8 g lit-1). Results showed that grain yield per plant, yield components, grain filling rate, grain filling period and effective grain filling period decreased with increasing of soil salinity. While proline and soluble sugars content increased. Means comparison showed that the highest of yield per plant (3.64 g. plant-1), grain filling rate (0.00196 g day-1), grain filling period (52.75 days) and effective grain filling period (36.62 days) were obtained at both application of PGPR and mycorrhiza, foliar application 0.8 g lit-1 nano zinc oxide and no-salinity. The highest content of soluble sugars (99.48 mg g-1 FW) was obtained at both application of PGPR and mycorrhiza, foliar application 0.8 g.lit-1 nano zinc oxide and salinity of 60 mM. Salinity of 20, 40 and 60 mM NaCl decreased 8.9%, 22.11% and 32.34% respectively from grain yield and application of biofertilizers and nano zinc oxide compensated 40.17%, 49.74% and 40% respectively from yield reduction. Based on the results, it seems that application of biofertilizers and nano zinc oxide can be recommended for profitable triticale production under soil salinity condition.
Mohammad Sedghi, Paris Sheikhnavaz Jahed, Raouf Seyed Sharifi,
Volume 7, Issue 26 (vol. 7, no. 26 2018)
Abstract
Considering low vigor of Stevia (Stevia rebaudiana Bertoni) seeds and difficulty of its germination, the purpose of this experiment was to evaluating the effect of different priming types on germination and seedling growth of Stevia in the presence of gibberellic acid. A factorial experiment was carried out based on a completely randomized design with three replications. Treatments consisted of different concentrations of gibberellic acid (G1=0, G2 =25 and G3=50 mg L-1) and seed priming as hydro, hormone (gibberellic acid, 0.2 mg L-1) and Osmo (3% potassium nitrate) for 18 hours. The essential oil constituents were measured by gas chromatography (GC). The activity of hydrolytic and antioxidant enzymes in seedlings also were measured. The highest germination percentage (67.26 %) observed in the hormone priming and the concentration of 50 mg L-1 of gibberellic acid. Osmopriming had the highest germination rate. The highest levels of SOD activity and MDA content observed in osmopriming and catalase and peroxidase achieved in hydro priming without application of gibberellic acid. The highest level of alpha-amylase enzyme activity was related to hormone priming with 50 mg L-1 gibberellic acid. The highest levels of alphacadinol, methyl salicylate and Safranal and also carbohydrates and protein observed in hormone priming and 50 mg L-1 gibberellic acid. In conclusion, to achieve the highest essential oil contents in Stevia using hormone priming and application of 50 mg L-1 gibberellic acid was suitable.
Raouf Seyed Sharifi, Reza Seyed Sharifi,
Volume 8, Issue 29 (vol. 8, no. 29 2019)
Abstract
In order to study the effects of bio fertilizers application on quantitative and qualitative yield, proline content and activity of some antioxidant enzymes in sunflower (Helianthus annus L. var. Urofelor) in different irrigation withholding levels, a factorial experiment was conducted based on randomized complete block design with three replications in research farm of faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili in 2015. Treatments were included bio fertilizer application in four levels [no bio fertilizer as control, Azotobacter chrocoocum strain 5, application of mycorrhiza (Glomus mosseae), Azotobacter chrocoocum+ Glomus mosseae] and three irrigation levels (full irrigation as control, irrigation withholding at 50% grain filling period; irrigation withholding at 50% flowering stage). Results showed that maximum efficiency of PSII photochemistry (Fv/Fm) (0.64) was obtained in full irrigation and both application of Azotobacter+Glomus. Comparison of means showed that maximum of proline content and antioxidant enzymes activity such as catalase, peroxidase, and polyphenol oxidase were obtained in irrigation withholding at 50% flowering stage and both application of Azotobacter+Glomus. Maximum of oil percentage (43.33 %) and chlorophyll content was obtained in full irrigation. Whereas, the highest soluble sugars was obtained under irrigation withholding at 50% flowering stage. Both application of bio fertilizer increased chlorophyll content, soluble sugars and oil percentage about 30.16%, 33.23% and 9.25% in comparison with control. Full irrigation increased chlorophyll content and oil percentage about 42% and 16.85% in comparison with irrigation withholding at 50% flowering stage. The highest of grain yield (2743.5 kg.ha‑1) was obtained at application of Azotobacter+Glomus and full irrigation and the lowest of it (1696.5 5 kg.ha‑1) was belonged to irrigation withholding at 50% flowering stage and no bio fertilizers. Under irrigation withholding condition at 50% flowering and grain filling period stages and without application of Azotobacter+Glomus decreased grain yield about 24.54 and 60% in comparison with full irrigation. Under irrigation withholding condition at 50% flowering and grain filling period stages, both application of Azotobacter+Glomus increased grain yield about 13.3 and 23.52% respectively in comparison with control at the same irrigation withholding level. Based on the results, it seems that both application of Azotobacter+Glomus can be as a proper method for improving of grain yield of sunflower under water irrigation withholding condition.
Faramarz Yagini, Raouf Seyed Sharifi, Saeid Khomari, Marefat Gasemi,
Volume 9, Issue 39 (vol. 9, no. 39 2020)
Abstract
In order to study the effects of supplementary irrigation and seed inoculation by bio fertilizer on yield and some physiological traits of rainfed wheat (Rasad cultivar), a factorial experiment was conducted based on randomized complete block design with three replications in Agricultural Research Station of Ardabil in 2016. The factors experimental were included supplementary irrigation at three levels, once supplementary irrigation at booting stage (I1), once supplementary irrigation at heading (I2) and no irrigation as rain fed (I3), and biofertilizers in four levels without application of bio fertilizers as control (B1), seed inoculation with Azospirilum (B2), mycorrhizal application (B3), both application mycorrhizal and Azospirilum (B4). Means comparison showed that application of both bio fertilizers (mycorrhiza and Azosprilium) and once supplementary irrigation at booting stage and once supplementary irrigation at heading increased the grain yield about 35.27 and 28.9% respectively in comparison with application of bio fertilizers under rainfed conditions. Both application mycorrhiza and Azosprilium and once supplementary irrigation at booting stage increased maximum fluorescence (Fm), variable fluorescence (Fv), chlorophyll index and relative water content of flag leaf in comparison with no application of bio fertilizers under rainfed condition. Rainfed conditions increased electrical conductivity and minimum fluorescence (F0).
Parisa Sheikhnavaz Jahed, Mohammad Sedghi, Raouf Seyed Sharifi, Omid Sofalian,
Volume 11, Issue 50 (vol. 11, no. 50 2022)
Abstract
In order to investigate the effect of priming on germination characteristics of aged pumpkin seeds, under salinity stress an experiment was performed as a factorial design in a completely randomized design with 4 replications. Experiment was done in the Seed Science and Technology Laboratory of the Faculty of Agriculture and Natural Resources, Mohaghegh Ardabili University. Treatments included seed deterioration (control, 85% and 75%), salinity stress (zero, 75 and 150 mM), and priming (control, hydropriming, gibberellin, Gr24, benzyl-aminopurine, and spermidine). The results showed that salinity stress and seed deterioration reduced germination percentage, root length, stem length, relative water content (RWC), protein and carotenoids so that salinity treatment of 150 mmol, degree of 75 % seed deterioration showed the lowest percentage of these traits. Also, the activity of CAT, POX and SOD due to seed deterioration was 75% lower than other treatments. While priming with spermidine was able to significantly increase the amount of these enzymes in conditions of high salinity MDA, which is one of the most important results of stress, decreased under salinity stress and aging, but seed priming decreased MDA sharply, especially in priming with spermidine. In addition, seed priming was able to significantly reduce the effects of salinity stress and seed deterioration so that the percentage of germination and protein in increased gibberellin priming, root and shoot length in priming with Gr24, as well, and RWC and carotenoids in priming Spermidine. Salinity stress applied on deteriorated seeds led to disruption and reduction in physiological traits, while seed priming by different methods led to a reduction and improvement of adverse stresses.
Fatemeh Aghaei, Raouf Seyed Sharifi, ,
Volume 12, Issue 56 (vol. 12, no. 56 2023)
Abstract
In order to study the effects of foliar application of nanoparticles (zinc and silicon) and putrescine on chlorophyll fluorescence indices, dry matter remobilization and the contribution of this process in grain yield of wheat under salinity stress, an experimental as factorial based on a randomized complete block design with three replications will be conducted in the research greenhouse of the Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili in 2021. Factors experimentally included salinity at four levels (no salinity as control, salinity 40, 80 and 120 mM by NaCl), and foliar application of nanoparticles (Zn and Si) and putrescine at eight levels (foliar application with water as control, foliar application 50 mg.L-1 nano silicon, foliar application, 1 g.L-1 nano znic oxide, foliar application of putrescine, foliar application of nano Si-Zn oxide, foliar application of nano silicon and putrescine, foliar application of nano Zn oxide and putrescine, foliar application of nano Si-Zn oxide and putrescine). The results showed that foliar application of nanoparticles (Zn and Si) and putrescine under no salinity increased variable fluorescence (95.8%), maximum fluorescence (35.33%), quantum yield (42.24%), leaf area index (45.27%), flag leaf protein (41.8%), total dry matter (44.09%), current photosynthesis (87.15%) and the contribution of current photosynthesis in grain yield (36.04%) and grain yield (37.34 %) compared to no foliar application of nanoparticles and putrescine under the highest salinity level. But the maximum dry matter remobilization from stem and shoot (37.8 and 38.15%, respectively) and the contribution of these processes to grain yield (89.45 and 90.22%, respectively) were obtained in no foliar application of nanoparticles and the putrescine under salinity 120 mM. It seems that nanoparticles and putrescine application can increase grain yield of wheat under salinity stress due to improving current photosynthesis and chlorophyll fluorescence indices.
Hamed Narimani, Raouf Seyed Sharifi, Mohammad Sedghi,
Volume 13, Issue 59 (vol. 13, no. 59 2024)
Abstract
In order to study the effects of mycorrhiza, vermicompost and putrescine on the morpho-physiological characteristics of triticale (Triticosecale Wittmack) under salinity stress, an experimental as factorial was conducted based on a randomized complete block design with three replications at the research greenhouse of the Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabil, during 2021–2022. The experimental factors were included salinity in three levels (no salinity as a control, 60 and 120 mM salinity from NaCl), biofertilizers in four levels (no application of biofertilizers as a control, application of vermicompost, Mycorrhiza, both applications of vermicompost and Mycorrhiza), and foliar application of putrescine (foliar application with water as a control, foliar application of 0.4 and 0.8 mM). The results showed that minimum of leaf electrical conductivity and minimum fluorescence were observed in the application of mycorrhiza with vermicompost and foliar application of 0.8 mM putrescine under no salinity conditions. Also, this treatment combination increased chlorophyll index (40.75%), relative water content (37.7%), stomatal conductance (43.85%), variable fluorescence (120.21%), maximum fluorescence (45.46%), quantum yield (51.37%), and grain yield (38.7%) in comparison with the no application of biofertilizers and putrescine under the highest salinity level (120 mM). Based on the results, the application of biofertilizers (mycorrhiza and vermicompost) and putrescine can increase the grain yield of triticale under salinity stress due to improving chlorophyll fluorescence indices and other physiological traits.
Alireza Mohammadjanlou, Raouf Seyed Sharifi,
Volume 13, Issue 62 (vol. 13, no. 62 2024)
Abstract
In order to study the effects of mycorrhiza and humic acid on compatible osmolytes, stomatal conductance, antioxidant enzyme activity, and some traits of bread wheat under water limitation conditions, an experiment as factorial was conducted based on a randomized complete block design with three replications at the research farm of the Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili in 2018-2019. Factors experiment included irrigation at three levels (full irrigation, irrigation withholding at 50% of heading and booting stages as moderate and severe water limitations (BBCH 43 and 55, respectively) and application of mycorrhiza and humic acid at eight levels (application of Glomus intraradices, Glomus moseae, both applications G. intraradices and G. moseae, humic acid, humic acid with G. intraradices, humic acid and G.moseae, humic acid with G. intraradices and G. moseae, without humic acid, G. moseae and G. intraradices as control). Means comparison showed that both application of G. intraradices and G. moseae with humic acid increased stomatal conductance and relative water content (60 and 47.1%, respectively) compared to no application of mycorrhiza and humic. Also, under severe water limitation conditions, the activities of catalase, peroxidase, and polyphenol oxidase enzymes, along with grain yield, increased by 38, 25.4, 83 and 24% as compared to the uninoculated plots with no humic acid application at the same irrigation level.
Mojtaba Yazdani, Golamabbas Akbari, Raouf Seyed Sharifi,
Volume 13, Issue 63 (vol. 13, no. 63 2024)
Abstract
In order to study the effects of nitrogen and biofertilizers on the trend of changes in chlorophyll fluorescence components, grain yield and some traits of wheat (Triticum aestivum L.) var. Chamran, an experiment as factorial, was conducted based on a randomized complete block design with three replications at the research farm of the Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabil, in 2021–2022. The experimental factors included the application of biofertilizer at eight levels (control, Azotobacter, Glomus moseae, Glomus intradices, Glomus moseae with Azotobacter, Glomus intradices with Azotobacter, Glomus moseae and Glomus intradices, Glomus moseae and Glomus intradices with Azotobacter) and nitrogen rates at three levels (no application of nitrogen as a control, application of 100 and 200 kg urea/ha). The results showed that Azotobacter sp. and Mycorrhiza (Glomus moseae and Glomus intradices) and 200 kg urea/ha had the lowest electrical conductivity and minimum fluorescence. Biofertilizer application (Azotobacter, Glomus moseae and intradices) increased the chlorophyll index (56.31%), relative water content (63.03%), variable fluorescence (101.86%), maximum fluorescence (38.5%), quantum yield (45.77%) and grain yield (36.68%) in comparison with no application of nitrogen and biofertilizers. The maximum nitrogen use efficiency was observed in the application of 100 kg nitrogen/ha. Based on the results of this study, it seems that the application of biofertilizers (Azotobacter and Mycorrhiza) and 200 kg urea/ha by improving chlorophyll fluorescence components and some physiological traits such as electrical conductivity and relative water content increased the grain yield of wheat by about 36.6% in comparison with control (no application of nitrogen and biofertilizers).
