Showing 5 results for pirzad
Esmaeil Rezaei- Chiyaneh, Mousa Jamali, Alireza Pirzad, Samira Tofig,
Volume 5, Issue 17 (Vol. 5, No. 17, year 2016 2016)
Abstract
Mycorrhizal fungi symbiosis with plants root through effective uptake of water and nutrients can be reduced the negative effects of salinity. To evaluate the effect of mycorrhizal fungi on some morpho-physiological traits and yield of Summer savory a greenhouse factorial experiment was conducted based on randomized complete block design with three replications at the Laboratory of Medicinal Plants, Payamenoor University of West Azerbaijan- Nagadeh, Iran, in 2013. The first factor included three salinity levels as zero (control), 75 and 150 mM. and second factor included of six mycorrhizal fungi species as Glmus versiforme, G. mosseae, G. interaradices, G. caledonium, G. clarum, Acaulospora langula and control treatment. Increasing salinity caused to significant reduction of chlorophyll a, stem length and stem diameter. The highest concentrations chlorophyll a, stem length and stem diameter were obtained from mycorrhizal plants of G. versiforme, as same as other species. The interaction between mycorrhiza and salinity on number of leaf, total dry matter, chlorophyll b and total chlorophyll, prolin and leaf relative water content were significant. The maximum total dry matter was observed in non-saline treatments of G. intraradices. The highest concentrations of chlorophyll b and total chlorophyll were belonged to plants treated by 75 mM NaCl and inoculated with G. intradices. The highest leaf relative water content (87.6 %) and prolin were respectively obtained from plants treated by G. caledonium and G. mosseae in 75 mM of NaCl. In conclusion, Mycorrhizal fungi symbiosis led to enhance morpho-physiological traits and yield of savory affected by salinity.
Msc Sajjad Rahimi, Dr. Alireza Pirzad, Dr. Jalal Jalilian, Professor Mehdi Tajbakhsh,
Volume 6, Issue 21 (vol 6, no. 21 2017)
Abstract
Biofertilizers included solid, liquid or semi-solid materials that contain one or several microorganism species developing plants root system leads to better uptake of water and nutrients resulting in the further growth of the plant. To evaluate the accumulation of nutrients in leaf and biomass production of pot marigold (Calendula officinalis L.), a factorial experiment was conducted based on randomized complete block design with three replications at Urmia University in 2014. Treatments were irrigation (irrigation at 50% and 80% Fc) and phosphorus sources (control, triple super phosphate, phosphate solubilizer bacteria, mycorrhizal fungi species included Glomus intraradices, G. mosseae and G. hoi). Results showed that in water deficit condition, the leaf phosphorus was significantly reduced in comparison to normal irrigation. Also, there were the significant effect of phosphorus on root colonization, and significant interaction effect of irrigation×phosphorus on biomass yield. The greatest increasing of root colonization was observed in plants treated with G. hoi. Generally, in water deficit condition, decreasing root access to nutrients in this condition led to lower biomass. But leaf protein yield in water deficit stress was greater than normal condition.
Fahimeh Shokrani, Jalal Jalilian, Alireza Pirzad, Esmaeil Rezaei- Chiyaneh,
Volume 12, Issue 58 (vol. 12, no. 58 2024)
Abstract
Intercropping and biofertilizers are the effective components of sustainable agriculture that improve the yield quality and quantity of the plants. A two-year factorial field experiment was conducted to find out the effect of phosphate solubilizing bacteria (PSB) on yield, yield components and some physiological aspects of intercropping of rain-fed chickpea and dragon's head. The first factor included five intercropping patterns that were sole cropping chickpea (30 and 40 plant m-2), dragon's head (160 plant m-2) and additive intercropping of both plants. The second factor was the use and non-use of phosphate solubilizing bacteria (Bacillus lentus and Pseudomonas putida). The results indicated that sole cropping of 30 plants m-2 of chickpea and 160 plants m-2 of dragon's head had the maximum of 1000-seed weight, seed yield, biological yield and harvest index with PSB inoculation. In both plants, the highest leaf nitrogen (2.97 and 2.76%), total soluble carbohydrates (1.12 and 1.47 mg g-1 fresh leaf) and chlorophyll (3.42 and 2.94 mg g-1 fresh leaf) obtained from intercropping of dragon's head+30 plant m-2 of chickpea inoculated with PSB. The maximum values of LER (>1) for PSB-inoculated (1.72) and non- PSB (1.66) were observed in dragon's head +30 plant m-2 of chickpea intercropping of. In general, intercropping of dragon's head-chickpea increased yield and yield components resulted in higher land use efficiency.
Sajad Rahimi, Alireza Pirzad, Jalal Jalilian, Saeedeh Rahimzadeh,
Volume 13, Issue 61 (vol. 13, no. 61 2024)
Abstract
Cost-effective exogenous application of some metabolites (ascorbic acid and proline) and nutrients (e.g. nitrogen) may help to minimize the harmful effects of salinity. This split-plot research was tackled to evaluate the impact of ascorbic acid (5 mM), proline (20 mM), and urea (46%N) on the alleviation of osmotic, ionic, and oxidative stresses of non-saline and 6.7 dS/m salinity in Melilotus officinalis according to a 2-year experiment at Urmia University. Salt stress increased the activities of superoxide dismutase, glutathione peroxidase, Phenylalanine ammonia-lyase and the amounts of malondialdehyde, peroxide hydrogen, flavonoids, sodium, potassium and calcium in leaves. The proline, potassium, calcium and relative water contents, activities of catalase and ascorbate peroxidase, plant biomass and seed yield were decreased at salinity. In salt-treated plants, foliar sprays of proline enriched the leaf cells with K+ ions and reduced the Na+/K+ ratio, leading to increased relative water content. Foliar sprays of urea increased the proline content, flavonoids, relative water content, and antioxidant enzyme activities that lead to reducing oxidative damage. These findings exhibited the beneficial effects of foliar-applied urea and proline that led to considerable improvement in salt tolerance through biochemical responses.
Peyman Mohammadzadeh Toutounchi, Alireza Pirzad, Jalal Jalilian,
Volume 13, Issue 64 (VOL. 13, NO. 64 2025)
Abstract
Chicory, blue-flowered perennial plant, Native to Europe, is cultivated extensively in the Netherlands, Belgium, France, and Germany and to some extent in North America. Its leaves are eaten as a vegetable or in a salad, and the roots may be boiled and eaten. The plant is grown as a fodder or herbage crop for cattle. Supplemental irrigation, an impressive strategy, diminishes the detrimental effects of drought on the productivity of rainfed plants. A factorial experiment was performed at Urmia University during 2016-2017. The experiment was included three factors; irrigation [without irrigation (rainfed) and supplemental irrigation], growing stage (vegetative and flowering) and fertilizers (control, mycorrhizal fungi (M, Funneliformis mosseae), Thiobacillus thiooxidans bacteria (T), M+T, vermicompost (V; 10 Mg ha-1), M+V, T+V and M+T+V). By supplemental irrigation, the amount of hydrogen peroxide, the activities of ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT) and guaiacol peroxidase (G-POD) were significantly reduced. Dual inoculation of plants resulted in a significant decrease of electrolyte leakage and malondialdehyde (MDA). Also, in co-inoculation conditions, the amount of total phenolics content (TPC), soluble proteins, catalase, ascorbate peroxidase and guaiacol peroxidase activity were significantly increased, which this increment was more noticeable with vermicompost application. Biological yield was increased by 74.7%, in dually-inoculated and irrigated plants. The rate of root colonization in mycorrhized plants was significantly increased, which probably had a major role in the above results. Accordingly, combined use of mycorrhiza, Thiobacillus and vermicompost, as well as supplemental irrigation can improve the yield of chicory forage in rainfed condition.
