Raheleh Ghale Ghafi; Hossein HajiAbaee; Fathieh Nabhani; Salvia Mohammadpour; Zahra Ardanji Kalate Siyahdasht
Abstract
This study was carried out to investigate the effect of mycorrhizal fungi (Rhizophagus irigularis) and rhizobacteria (Pseudomonas fluorescens) on maize under different fertilization conditions as greenhouse research in the Jalin region of Gorgan in 2018 during two separate experiments. The aim of the ...
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This study was carried out to investigate the effect of mycorrhizal fungi (Rhizophagus irigularis) and rhizobacteria (Pseudomonas fluorescens) on maize under different fertilization conditions as greenhouse research in the Jalin region of Gorgan in 2018 during two separate experiments. The aim of the first experiment was to compare the conventional soil incubation with seed-coating incubation, and the second experiment was to assess the growth of maize incubated with mycorrhizal fungi and plant growth-promoting rhizobacteria through seed-coating at three treatment levels of Hoagland nutrient solution (Control, 80 and 100 volumetric percentage of Hoagland solution). In both experiments, at 70 days after seed-coating, one gram of maize roots and soil attached to it were sampled and DNA was extracted from the maize rhizosphere. In the first experiment, there was no significant difference between the conventional soil incubation and seed-coating incubation according to the dry weight of stems and roots, roots’ longitudinal colonization percentage, arboscol abundance, vesicles abundance, and elements concentration. In the second experiment and under full fertilizing conditions, mycorrhizal incubation showed a significant increase in concentrations of nitrogen, phosphorus, potassium, and zinc (18.1, 3.5, 56, and 46.0 mg/kg, respectively) compared to the control (12.6, 3.1, 39.6, and 24.4 mg/kg, respectively), and the bacterial incubation showed a significant increase for magnesium, zinc, and manganese (2.0, 42.6, and 145 mg/kg, respectively) compared to the control (1.0, 24.4, and 60 mg/kg, respectively).
Nader Khadem Moghadam Igdelou; Ahmad Golchin; Khadije Farhadi
Abstract
In order to study the effect of Cobalt, Molybdenum, and Nitrogen on the growth of Phaseolus vulgaris in soilless culture, a pot experiment was conducted in 2015-16 and in July, at 25˚C and light intensity of 40,000 lux as a factorial based on a CRD with 36 treatments and three replications in the greenhouse ...
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In order to study the effect of Cobalt, Molybdenum, and Nitrogen on the growth of Phaseolus vulgaris in soilless culture, a pot experiment was conducted in 2015-16 and in July, at 25˚C and light intensity of 40,000 lux as a factorial based on a CRD with 36 treatments and three replications in the greenhouse of Zanjan University. The test factors consisted of four levels of Nitrogen (50, 100, 150, and 200 mg/l), three levels of Molybdenum (0.067, 0.2, and 0.6 mg/l) and, three levels of Cobalt (0.006, 0.06, and 0.3 mg/l). Factor levels were prepared by adding ammonium nitrate, ammonium molybdate, and cobalt chloride to a stock solution. Results of morphological traits showed that the highest pod dry weight was obtained in N100Mo0.6Co0.06 treatment which had a maximum difference of 47.9% with other treatments. The highest dry weight of shoots was obtained from N150Mo0.6Co0.006 treatment and the highest root dry weight was obtained from N150Mo0.6 and N150Co0.3 treatments. Also, the highest number of pods was obtained in N150Mo0.6, N100Co0.3 and Mo0.6Co0.3 treatments with values of 235.2, 266.4, and 220.8 g/pot, respectively. Investigation of physiological traits showed that the highest concentrations of Nitrogen, Molybdenum, and Cobalt were obtained from N200Mo0.6Co0.3, N150Mo0.6Co0.3, and N150Mo0.067Co0.006 treatments, respectively. Overall, it can be stated that the application of N100Mo0.6Co0.06 treatment can positively affect the dry weight of pods, which are economically productive and improve the performance of P. vulgaris (Talash cultivar).
majid moslemi; hamidreza mobasser; nematollah sedaghat; eiman eshghi
Abstract
Optimizing the rate of nitrogen fertilizer application is one of the important management strategies for yield improvement. In order to investigate the effects of nitrogen levels & stress during two years on morphological characteristics & agronomic traits of rice, an experiment was conducted ...
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Optimizing the rate of nitrogen fertilizer application is one of the important management strategies for yield improvement. In order to investigate the effects of nitrogen levels & stress during two years on morphological characteristics & agronomic traits of rice, an experiment was conducted in the form of split plots in a randomized complete block design with four replications in 2009 & 2010 in a research farm located in Amol. Nitrogen levels at three levels (46, 69, 92 kg N / ha from urea source) as the main factor & sub-factor including four levels of stress or lack of nitrogen consumption (T1 = stress at full clustering stage, T2 = stress at stage the emergence of the initial cluster was T3 = stress at tillering stage and T4 = stress at transplanting stage). The results showed that number of full panicles per panicle, 1000-seed weight, Grain yield and harvest index in 2009 it was more than in 2010. Grain yield in the first year (450.25 g / m2) was higher than the second year (395.1 g / m2). Maximum harvest index was obtained in 2009 with nitrogen stress at full clustering stage. Therefore, the application of 69 kg of nitrogen in installments per hectare can be suggested to produce the highest grain yield.
Alireza Hamdami; Hashem Hadi; Amir Rahimi
Abstract
In order to investigate the effect of different periods of weed control and interference on yield and yield components of fenugreek, an experiment was done with two series of treatments including weed control from emergence to the third true leaf, to the sixth true leaf , to the first flowering branch, ...
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In order to investigate the effect of different periods of weed control and interference on yield and yield components of fenugreek, an experiment was done with two series of treatments including weed control from emergence to the third true leaf, to the sixth true leaf , to the first flowering branch, to the third flowering branch, to flowering, to seed filling and the second series including weed interference up to the third true leaf, up to the sixth true leaf, up to the first flowering branch, up to the third flowering branch, up to the flowering and up to the seed filling at research farm of Urmia university during 2018. The results showed that the interference treatment up to the third true leaf had the lowest weed dry weight. In both series of treatments with increasing the presence period of weeds, a significant decrease was observed in grain yield per plant and per hectare of fenugreek, so that the beginning of the critical period was determined 140 and 158 GDD from plants emergence at two acceptable levels of 5 and 10% reduction of grain yield per hectare, respectively, and the end of the critical period of weed control was established 349 and 282 GDD from the emergence at the two levels of yield reductions, respectively. Therefore, the best time to control weeds was from the third true leaf to flowering and from the four-leaf stage until the appearances of flowers at the levels of 5% and 10% yield reductions, respectively.
Parisa Sheikhzadeh; Gholam Behzad; Nasser Zare; Mitra Rostami
Abstract
To investigate the effects of selenium nanoparticles application on photosynthetic and biochemical characteristics and cold tolerance of oilseed rape, an experiment was carried out based on a randomized complete blocks design with three replications in the research farm station of the University of Mohaghegh ...
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To investigate the effects of selenium nanoparticles application on photosynthetic and biochemical characteristics and cold tolerance of oilseed rape, an experiment was carried out based on a randomized complete blocks design with three replications in the research farm station of the University of Mohaghegh Ardabili in 2018. The treatments consisted of foliar application of selenium nanoparticles (0 as control, 25, and 50 mg L-1) applied at the 8-6 leaves stage. The results showed that selenium nanoparticles application significantly increased the RWC, photosynthetic pigments, antioxidant enzyme activity, winter survival, and grain yields of oilseed rape plants. The highest RWC, Fm, Fv, and Fv/Fm, proline content, and the activity of catalase and peroxidase enzymes were obtained with foliar application of 50 mg L-1 selenium nanoparticles. It seems that selenium nanoparticles application significantly increased the winter survival of oilseed rape plants by about 7.18 to 8.94 percent, by improving the Fv/Fm, the activity of the antioxidant enzymes, and proline content. Foliar application of 25 and 50 mg L-1 selenium nanoparticles caused about 28.10 and 34.19 percent increase in grain yield of oilseed rape as compared to control (no spraying) treatment, respectively. In general, the application of 50 mg L-1 selenium nanoparticles had positive and significant effects on the photosynthetic and biochemical characteristics, which resulted in increased cold tolerance of the oilseed rape plant.
Roya Mousavi; Vida Chalavi; Kamran Ghasemi; Mehdi Hadadinejad
Abstract
To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, ...
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To investigate the effect of nitroxin and vermicompost on the qualitative and functional characteristics of blackberry, a factorial experiment was conducted in a completely randomized design with four replications in pots. The first factor was the percentage of vermicompost at five levels (0, 10, 20, 30 and 40) and the second factor was the level of inoculation and non-inoculation with nitroxin (Ni). The results showed that the treatments had a significant effect on the studied traits. The highest fruit weight, number of fruits, and yield was observed in 20% vermicompost. Maximum fruit length (1.62 cm) obtained in 10% vermicompost and nitroxin inoculation. The highest fruit diameter was obtained in 30% vermicompost. Also, in biochemical parameters, the application of 10% vermicompost produced the most soluble solids and flavor index. The highest amount of anthocyanin at 551 and 563 (mg/L fruit juice) was obtained respectably in 20 and 30% vermicompost treatments. Application of nitroxin along with vermicompost yielded 30% of the most vitamin C. In general, the results showed that the application of vermicompost at levels of 20 to 30% has the best effect on the quantitative and qualitative traits of blackberry and nitroxin can reduce the negative effect of high vermicompost and increase the effect of vermicompost on the blackberry plant.
Babak Sepehri; Hami dreza tohidi Moghadam; Farshad Ghooshchi; Meysam Oveysi; Pourang Kasraie
Abstract
Periwinkle herb with the scientific name (Catharanthus roseus) is one of the most important medicinal plants in the world which in addition to haring leaves beautiful flowers and decorative application, it also has different applications in pharmaceutical industries cosmetics and hygienic. This plant, ...
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Periwinkle herb with the scientific name (Catharanthus roseus) is one of the most important medicinal plants in the world which in addition to haring leaves beautiful flowers and decorative application, it also has different applications in pharmaceutical industries cosmetics and hygienic. This plant, in its young leaves has very important alkaloids which called vinblastine and vincristine which has in chemotherapy of different type of cancers (leukemia, breast and lymph nodes) and its roots contain ajmalicine alkaloids that is used in treatment of hypotension. This research was for investigation of the effect of growth regulator and spraying of zinc and magnesium nanoparticles under the conditions of drought stresses on total alkaloids, anthocyanin, total chlorophyll, the weight of wet and dry branches contain alkaloids, and the number of lateral branches periwinkle herb (Catharanthus roseus (L.) G.DON) arranged as a factorial pot experiment based on a completely randomized design which took place in greenhouse condition during years 2020 and 2021 in Tehran, Iran. In the study of the effects of drought stress and spraying of zinc and magnesium nanoparticles on all investigated traits (total alkaloid, anthocyanin, total chlorophyll, fresh and dry weight of alkaloid-containing branches, and the number of lateral branches), there was a statistically significant difference in A level of 1% was observed (P≤0.01). But in the interactions effects of drought stresses and growth regulator showed the highest effect on wet branches contain alkaloids (P≤0.01).
zahra ajribzadeh; salim farzaneh; Mahmoud Shomili; Hamid Reza Balouchi; aziz Ker Mullah Chaab; Raouf Seyed Sharifi
Abstract
This study was performed to investigate the effect of four types of binders at different levels: carboxymethylcellulose (40, 60 and 80 g/l), arabic gum (50, 100 and 150 g/l), tragacanth (30, 60 and 90 g/l) and starch (45, 60 and 75 g/l) as the first test and four types of nutrients with different levels: ...
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This study was performed to investigate the effect of four types of binders at different levels: carboxymethylcellulose (40, 60 and 80 g/l), arabic gum (50, 100 and 150 g/l), tragacanth (30, 60 and 90 g/l) and starch (45, 60 and 75 g/l) as the first test and four types of nutrients with different levels: humic acid (6, 9 and 12 g/l), filter cake ( 5, 10 and 15 g/kg), superabsorbent (10, 30 and 45 g/kg) and microcombi fertilizer (10, 20 and 30 g/kg) as the second experiment with control in a completely randomized design with 3 replications In 2020, in Khuzestan-Iran sugarcane research station. The results showed that the effect of four types of binder on sugarcane plant characteristics such as germination rate, stem length, stem dry weight and plant moisture content was significant and the most positive effect was observed in starch gum (60 g/l). Also, four nutrients had a significant effect on some characteristics such as germination rate, stem length, stem dry weight and plant moisture content. The most positive effect for characteristics was observed in humic acid (12 g/l). Due to the most positive effect of starch gum, in later studies, this glue can be used as a binder, along with other nutrients and fillers for planting lateral buds of sugarcane stems to produce artificial single-seeded sugarcane seeds.
tayebe rostami; hamid abbasdokht; hassan makarian; Manoochehr Gholipoor; khalil karimzadehasl
Abstract
This study aimed to assess the effects of mycorrhiza and phosphorus fertilizer on morphophysiological traits and yield of quinoa (Chenopodium quinoa willd) and maize (Zea mays. L) In an intercropping system using the replacement method. A complete randomized block design with three replications was implemented ...
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This study aimed to assess the effects of mycorrhiza and phosphorus fertilizer on morphophysiological traits and yield of quinoa (Chenopodium quinoa willd) and maize (Zea mays. L) In an intercropping system using the replacement method. A complete randomized block design with three replications was implemented at two research farms affiliated with Shahrood University of Technology, located in Shahrood and Miami cities. The intercropping systems consisted of five planting ratios: pure quinoa cultivation, 75% quinoa + 25% corn, 50% quinoa + 50% corn, 25% quinoa + 75% corn, and pure corn. The first factor was combined with three levels of phosphorus treatment (zero, 50, and 100 kg/ha) as the second factor. Mycorrhiza application was considered as the third factor, with two levels: inoculated and control. The results demonstrated that the growth, yield, and yield components of both quinoa and maize were significantly influenced by the intercropping systems, mycorrhiza application, and phosphorus concentrations. The tallest plants were observed in maize (202.8 cm) and quinoa (81.3 cm) when mycorrhiza was combined with a phosphorus concentration of 50 kg/ha. Similarly, the highest leaf area index values were recorded in quinoa (86.2) and corn (6.57) under the same treatment. Notably, quinoa (2.88 mg/ml) and maize (12.39 mg/ml) exhibited the highest chlorophyll content when mycorrhiza was applied in conjunction with a phosphorus concentration of 50 kg/ha in the Shahrood region. These findings emphasize the significant influence of different intercropping systems, mycorrhiza application, and phosphorus concentrations on the growth, yield, and physiological characteristics of quinoa and maize.
Ali Hadi Almamouri; Mohsen Ebrahimi; Khalil ZeinaliNejad
Abstract
Objective: Wheat (Triticum aestivum L.) is the first grain in the world in terms of its importance and amount of production. The aim of this research is to find the genetic diversity among the spring wheat genotypes.
Methods: In this study, the genetic diversity of 32 spring wheat genotypes cultivated ...
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Objective: Wheat (Triticum aestivum L.) is the first grain in the world in terms of its importance and amount of production. The aim of this research is to find the genetic diversity among the spring wheat genotypes.
Methods: In this study, the genetic diversity of 32 spring wheat genotypes cultivated in the Gorgan University of Agricultural Sciences and Natural Resources in the crop year of 1401-1400 was investigated by measuring 12 kernel and flour quality traits.
Results: The results of analysis of principal components illustrated that the first five components explained a total of 89.05 percent of the variation among traits. The cluster analysis divided the studied genotypes into four groups. Based on the obtained results, the cultivars in the first group, all of which were Iranian, had the highest values of grain gluten, flour gluten and flour protein. The second group, which included the genotypes of Iraq, had the highest values in terms of grain moisture and index, and the lowest values in terms of flour protein, falling number, and hectoliter.
Conclusion: The studied spring wheat cultivars showed high genetic diversity in terms of traits. Therefore, suitable parents can be selected based on the desired trait, for crossing between cultivars in future breeding programs.
Zeinab Alipoor; khodayar Hemmati; Khalil Zaynalinezhad; Mohammad Kheyrkhah
Abstract
Objective: Comparison of morphological and phytochemical characteristics of annual and perennial wild and cultivated Kakuti in Razavi, North and South Khorasan provinces.
Methods: In this study, Ziziohora tenuior and Ziziphora clinopodioides was studied in sex region in Razavi, North and South Khorasan ...
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Objective: Comparison of morphological and phytochemical characteristics of annual and perennial wild and cultivated Kakuti in Razavi, North and South Khorasan provinces.
Methods: In this study, Ziziohora tenuior and Ziziphora clinopodioides was studied in sex region in Razavi, North and South Khorasan province in 2021.Plant samples were collected from each region and was planted in pots. The experimental design used in this experiment was a nested design with four replications.Also, by referring to the places where plants were collected in the target areas, all the morphological and phytochemical traits were measured for wildplants.
Results: Based on the results the most percentage of essential oil in annual and perennial kakuti belonging to Qain (0.75%) and Qochan (2.29%) respectively. Also, the percentage of pulgone in the annual kakuti in Bardeskan was higher than other studied cities (77.58%). The highest alphapinene (0.42%) and sabinen (1.31%) percentage of annual kakuti was belonging to Bojnord while of perennial kakuti essence in Qochan (0.89%) and bijnord (1.23%) was more than other cities.
Conclusion: The amount of phenol, flavonoid and antioxidan activity in annual and perennial kakuti under natural conditions and in Sarayan was higher than other treatments. Annual and perennial kakuti belonging to Bojnord had higher wet and dry yields than other ecotypes, while kakuti belonging to Sarayan had superiority in phytochemical characteristics.