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Open Access Article
1 - Effect of salicylic acid on some growth and biochemical characters of Solanum tuberosum cv. Agria under salinity stress on in vitro condition
farzaneh Fakhimi Alireza Motallebi Azar Fariborz Zaree Nahandi Nemat Sokhandan Bashir Gholamreza GohariSalinity is an abiotic stress that seriously constrains agricultural production including potatoes in most regions of the world. This study was carried out to investigate the effect of salicylic acid, on growth properties and biochemical characteristics of in vitro cult MoreSalinity is an abiotic stress that seriously constrains agricultural production including potatoes in most regions of the world. This study was carried out to investigate the effect of salicylic acid, on growth properties and biochemical characteristics of in vitro cultureof Solanum tuberosum cv. Agria under salinity stress. The study was carried out at a completely random design with eight replications in the Department of Horticulture of University of Tabriz. Variables under study included salinity stress at two levels (0 and 70 mM/L sodium chloride) and salicylic acid at four levels (0, 1, 10, and 100 mM/L). Results showed that salicylic acid significantly mitigated the effects of salinity. Therefore, the highest plantlet length was recorded under salinity along with 10 mM salicylic acid treatment showing the positive effect of the treatment on mitigating the influences of salinity. However, the concentrations of salicylic acid higher than 10mM/L not only had no effect on plants, but also negatively influenced the effects of salinity stress. Also, antioxidant enzyme activity of the plantlets had a considerable increase at all concentrations of salicylic acid and levels of salinity. Moreover, the study suggested that Solanum tuberosum cv. Agria was relatively sensitive to salinity stress and all characteristics of the plants under study were influenced with salinity. Also, application of salicylic acid caused improvement in the growth and biochemical properties of the plants under study increasing their tolerance against salinity stress. Manuscript profile -
Open Access Article
2 - Effect of salicylic acid on some growth and biochemical characters of Solanum tuberosum cv. Agria under salinity stress on in vitro condition
Ahmad Abdolzade Zahra Soleiman nejad Hamid reza Sadeghe pourSalinity is an abiotic stress that seriously constrains agricultural production including potatoes in most regions of the world. This study was carried out to investigate the effect of salicylic acid, on growth properties and biochemical characteristics of in vitro cult MoreSalinity is an abiotic stress that seriously constrains agricultural production including potatoes in most regions of the world. This study was carried out to investigate the effect of salicylic acid, on growth properties and biochemical characteristics of in vitro cultureof Solanum tuberosum cv. Agria under salinity stress. The study was carried out at a completely random design with eight replications in the Department of Horticulture of University of Tabriz. Variables under study included salinity stress at two levels (0 and 70 mM/L sodium chloride) and salicylic acid at four levels (0, 1, 10, and 100 mM/L). Results showed that salicylic acid significantly mitigated the effects of salinity. Therefore, the highest plantlet length was recorded under salinity along with 10 mM salicylic acid treatment showing the positive effect of the treatment on mitigating the influences of salinity. However, the concentrations of salicylic acid higher than 10mM/L not only had no effect on plants, but also negatively influenced the effects of salinity stress. Also, antioxidant enzyme activity of the plantlets had a considerable increase at all concentrations of salicylic acid and levels of salinity. Moreover, the study suggested that Solanum tuberosum cv. Agria was relatively sensitive to salinity stress and all characteristics of the plants under study were influenced with salinity. Also, application of salicylic acid caused improvement in the growth and biochemical properties of the plants under study increasing their tolerance against salinity stress. Manuscript profile -
Open Access Article
3 - Application of phosphorous from different chemical, biological and nano-fertilizer sources along with spraying of growth promoting substances on some growth indices, soluble sugars, and nicotine of tobacco (Nicotiana tabacum L.)
Yadgar Rezaؘie jani Babak Pasari Asad RokhzadiThis study was carried out to investigate application of phosphorous from different chemical, biological and, nano-fertilizers along with spraying of Farselon growth promoting substance on some growth indices, soluble sugars, and nicotine of tobacco in Marivan during 20 MoreThis study was carried out to investigate application of phosphorous from different chemical, biological and, nano-fertilizers along with spraying of Farselon growth promoting substance on some growth indices, soluble sugars, and nicotine of tobacco in Marivan during 2015- 2016. The experiment was carried out using a split plots and a randomized complete block design with three replications. The main factor consisted of five kinds of fertilizer including control (no fertilization), triple superphosphate, phosphate biological fertilizer (Barvar-2), Nano-phosphate, and combined fertilization (50% Triple superphosphate+ phosphate biological fertilizer + Nanophosphate). The subplot included spraying Farselon growth promotion substance at two levels including: control (distilled water) and Farselon growth promotion substance. Results showed that lower leaves side length, upper leaves side width, middle leaves side dry weight, middle leaves side soluble sugars and nicotine percent were affected significantly by fertilization. The highest lower leaves side lengths were achieved by phosphate biological fertilizer and the highest upper leaves side widths were recorded under phosphate biological fertilizer and nano-phosphate treatment. In addition, the highest middle leaf side dry weight increased in comparison with control as: 11.53, 10.04, 9.58, and 3.99 percent in biological fertilizer, Triple superphosphate, nano-phosphate, and combined fertilization as compared with the control. The lowest nicotine and highest soluble sugars percent were observed in the middle leaves side by combined fertilization. In this study, leaf number, leaf length in lower and middle leaf side, leaf width in upper leaf side, leaf dry weight, cash and nicotine percent in lower and upper leaf side and leaf soluble sugars percent in lower leaf side increased significantly under Farselon treatment. Manuscript profile -
Open Access Article
4 - An evaluation of fungus Piriformospora indica effects on some morphophysiological traits of valerine under drought stress
Mehdi Ghabooli Sheida Lorestani Zahra Movahedi Rouholah KarimiWe designed a set of comparative experiments to study the impact of inoculation with different inoculum of P. indica (non-inoculated, inoculated with spore and mycelium of P. indica) on some morphophysiological traits of Valeriana plant under different drought stress le MoreWe designed a set of comparative experiments to study the impact of inoculation with different inoculum of P. indica (non-inoculated, inoculated with spore and mycelium of P. indica) on some morphophysiological traits of Valeriana plant under different drought stress levels [Filed capacity (F.C.) and 50% F.C.]. The experiment was conducted as a factorial experiment in a completely randomized design with three replications. The results indicated that P.indica increased the biomass of inoculated plants compared with control plants in different levels of drought stress, as in inoculated plants under drought stress total shoot and root dry weight were increased by 37% and 14%, respectively. Under stress conditions, physiological traits like as total chlorophyll (24%), total phenol (14%), carbohydrate (4.3 times), protein (17%) and proline (2.1 times) were increased in inoculated plants. Beside, inoculation with fungus decreased ionic leakage by 38%. According to the results, it seems that valerian is also one of the hosts of this fungus and potential effect of fungus on increasing of growth and stress tolerance provide further investigation of the effect of fungus on increasing of medicinal ingredient. Manuscript profile -
Open Access Article
5 - Allelopathic effects of paraxanthine on some phytochemical parameters of Lettuce
Nastaran Asadi سید مهدی رضوی خسروشاهیParaxanthine is classified as secondary metabolites derived from purine nucleotides with molecular formula of C7H8N4O2. It occur in green tea, coffee, cocoa and a number of other plant. In this article, the effect of different concentration of paraxanthine was studied o MoreParaxanthine is classified as secondary metabolites derived from purine nucleotides with molecular formula of C7H8N4O2. It occur in green tea, coffee, cocoa and a number of other plant. In this article, the effect of different concentration of paraxanthine was studied on lettuce plant (Lactuca Sativa cv. Siahoo ) as a model plant. In order to show the effect paraxanthine on amount of free amino acids, content sugar, anthocyanines, flavonoides, tannins, alkaloids and phenolic compounds some experiments were performed in a completely randomized design. The lettuce seedlings were cultured in pots containing peat and were irrigated with hoagland nutrient solution containing paraxanthine (with the concentration of 10, 50 and 100µg/ml). three replicated were maintained for each treatment and also for control groups. After of twenty eight days of applying the treatments, the plants were harvested for performing the experiments. Amount of anthosyanines, flavonoid, alkaloids, tannins and phenolic compounds in treated plants were increased compared to the control. the content sugar and total free amino in treated plants were increased compared to the control group. It could be concluded that paraxanthine found in dregs of tea, coffee and cocoa, can be used as a food supplement in the culture of lettuce. Therefore, it increases effective compounds and medicinal benefits of this plant. Manuscript profile -
Open Access Article
6 - Evaluation and comparison of Leaf antioxidant properties and morphological traits of tomato varieties (Lycopersicon esculentum L)
zahra jahan tigh haghighi leila fahmideh bahman fazeli nasabin this study was tried Different tomato varieties based on phytochemical and morphological traits as well as antioxidant properties of leaf In the form of two germination experiments in laboratory and pot plants in a greenhouse, completely randomized in three replicati Morein this study was tried Different tomato varieties based on phytochemical and morphological traits as well as antioxidant properties of leaf In the form of two germination experiments in laboratory and pot plants in a greenhouse, completely randomized in three replications. Totally two experiments, different varieties of tomatoes were different (P<0.01) in terms of chlorophyll a, chlorophyll b, carotenoid, catalase, guaiacol, ascorbic peroxidase, polyphenol oxidase and phenylalanine, fresh weight and number of stems, germination percentage, dry weight, stem length, root length, except for the number of stems And plant height. In first experiment; The highest levels of chlorophyll a (189.99 mg/g fresh weight), chlorophyll b (6.145 mg/g fresh weight), and carotenoid (6.5015 mg/g fresh weight) was belong to Iran's Queen2274 cultivar. In second experiment; the highest amount of catalase (0.0196, 0.0192 and then 0.0181 mg/g fresh weight of extract) respectively was related to PS and Falat 111 from USA and then Queen2274 from Iran. The highest amount of Guiacol (0.0244 and 0.127 mg/g fresh weight of the extract) respectively was related to the French Clouse cultivar and the Italian Falat Y variety, respectively. Ascorbic peroxidase (0.0140 and 0.0136 mg/g fresh weight of extract), respectively, was related to Newton cultivar Holland and then French Clouse cultivar. Polyphenol oxidase (0.0112 and then 0.628 mg/g fresh weight of extract) was related to Iranian Queen2274 cultivar and USA PS cultivar. Maximum amount of phenylalanine (0.25 mg/g fresh weight of extract) was related to Iran's Queen2274 cultivars and USA PS cultivar. Based on the results of this research is suggested to obtain the best cultivar which has high levels of enzymatic and non-enzymatic antioxidants, the Queen2274, Clouse and PS varieties can be used as breeding program and produce superior cultivars. Manuscript profile -
Open Access Article
7 - Effects of paclubutrazol on water-less stress tolerance mechanisms of two sesame (Sesamum indicum L.) genotypes
elham faghani Mousa Miri Hemmatollah Pirdashti Valiollah GhasemiomranDrought is one of the most important abiotic agents that adversely affect the growth and development of plants. The arid and semi-arid regions where sesame (Sesamum indicum L.), as a relatively drought tolerant plant, is grown are specified by high temperatures. In orde MoreDrought is one of the most important abiotic agents that adversely affect the growth and development of plants. The arid and semi-arid regions where sesame (Sesamum indicum L.), as a relatively drought tolerant plant, is grown are specified by high temperatures. In order to evaluate the effects of paclubutrazul (PBZ) on the drought tolerant of sesame a factorial experiment were conducted based on randomized complete block design with three replications in 2014 at greenhouse of Educational Department of Kordkoy (Golestan province). Treatments included two genotypes of sesame (Yellow- white and Oltan), three levels of watering (20, 50 and 80% FC) and three concentrations of PBZ application (0, 7.5 and 15mg/L). Traits such as chlorophyll a, b and carotenoid contents, superoxide dismutase and peroxidase activity, yield and yield components were measured. Data were analyzed with SAS software. Results showed that genotype, water treatment and PBZ had a significant effect on chlorophyll a, b and carotenoid contents, superoxide dismutase and peroxidase activity of roots and leaves, yield and yield components. High PBZ application where plants exposed to the severe water stress significantly improved chlorophyll b (44%), superoxide dismutase of roots and peroxidase activity of roots and leaves. Yellow-white genotype showed higher chlorophyll a (30.4%), b (40.6%) and carotenoid concentration (29.9%), superoxide dismutase of roots (3times), superoxide dismutase of leaves (1.9 times) and peroxidase activity of roots (3times) in severe water deficit stress. Finally, it can be concluded that Yellow white responded better to drought stress than Oltan genotype with maximum levels of PBZ throughout antioxidant mechanismes. Manuscript profile -
Open Access Article
8 - Effect of water deficit stress and application of humic and salicylic acid on physiological traits, yield and yield components of corn
Seyyed Moosavi hossain Ragh araIn order to study the effect of water deficit and the application of humic and salicylic acid on physiological traits, yield and yield components of corn, an experiment was carried out as a split-plot based on randomized complete blocks design with three replications at MoreIn order to study the effect of water deficit and the application of humic and salicylic acid on physiological traits, yield and yield components of corn, an experiment was carried out as a split-plot based on randomized complete blocks design with three replications at the research field of Islamic Azad Universityof Birjand, Iran in 2014. The main factor was irrigation in three levels (supply of 33, 67 and 100% water requirement) and the sub-factor was humic and salicylic acid application in 4 levels (application of humic acid, salicylic acid, humic + salicylic acid and no application). The results of variance analysis showed that irrigation significantly affected traits of physiological, seed yield components and yield but humic acid and salicylic acid application significantly affected chlorophyle index, stomatal conductivity, 1000-seed weight and seed yield. Also, interaction effect of irrigation and humic acid and salicylic acid was no significant on measured traits. Chlorophyle index, stomatal conductivity, ear number per m2, row number per ear, seed number per row, seed number per ear and 1000-seed weight significantly decreased by 15.6, 35.6, 41.2, 14.1, 33.9, 61.8 and 40%, respectively with the decreas of water requirement from 100 to 33%. Seed yield and biological yield in treatment of 100% water requirement supply, had significantly superiority 3.9 and 2.4 times, respectively as compared with treatment of 33% water requirement supply. Chlorophyle index by 7.5, 7.7 and 8.9%, 1000-seed weight by 22.5, 26.6 and 20.7% and seed yield by 26.5, 18.5 and 21.7%, significantly increased with application of humic acid, salicylic acid and humic acid + salicylic acid respectively as compaed with no application of this acids. The results showed that supply of 100% water requirement and independent application of humic acid or salicylic acid can increase seed yield of corn. Manuscript profile
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