Papers by Amir Gholizadeh
Journal of Crop Breeding, Oct 10, 2020
Multi-environment trials have a fundamental role in selection of the best genotypes across differ... more Multi-environment trials have a fundamental role in selection of the best genotypes across different environments before its commercial release. This study was carried out to identify high-yielding stable sunflower genotypes using the graphical method of the GGE biplot. For this purpose, 11 new hybrids along with four cultivars were evaluated in a randomized complete block design with four replications across 8 environments (combination of years and locations) during 2018–2020 growing seasons. The results indicated that genotype (G), environment (E) and genotype × environment (G×E) effects were significant for oil yield. The G, E and G×E interaction effects accounted for 51.94, 9.50 and 18.67% of the total variation, respectively. Results of biplot analysis showed that the first and second principle components accounted 45.9% and 20.4%, respectively, and in total 66.3% of oil yield variance. GGE biplot analysis indicated two major mega-environments of sunflower testing locations in ...
Agricultural Research
Multi-environment trials have a fundamental role in selecting the better performing genotypes sta... more Multi-environment trials have a fundamental role in selecting the better performing genotypes stable across different environments before its commercial release. Thus, the study was carried out to identify high-yielding stable rapeseed genotypes using different parametric and nonparametric statistics involving 11 new advanced genotypes and 2 cultivars. The genotypes were evaluated in a randomized complete block design with three replications across 12 environments (combination of years and locations) during 2015–2017 growing seasons. The results indicated that genotype, environment and genotype × environment (G × E) effects were significant for seed yield, indicating differential responses of the genotypes to the environments, enabling the stability analysis. According to correlation coefficient and principal components analysis (PCA), the nonparametric measures of Si(2), Si(3), Si(6), NPi(2), NPi(3), NPi(4) and KR were positively and significantly correlated with mean seed yield and thus these measures can be used for selection of the stable genotypes. In general, based on our results four genotypes, G13, G2, G1 and G5 had higher seed yield and stability than control genotypes (G10 and G11). The genotype G13 with the highest yielding and stability performance is the most recommended as promising genotype for commercial release to farmers for cultivation in cold and moderately cold regions of Iran and other similar environments for adoption. Oil content of the genotype G13 was 44.36%. Oleic acid, a prominent component (65.78%) followed by linoleic acid (16.72%) was recognized as the main components in oil content of the genotype G13.
Increasing fruit yield, fatty acids and essential oils content in coriander are the main objectiv... more Increasing fruit yield, fatty acids and essential oils content in coriander are the main objectives. Reaching them need to understand the nature of gene action and quantifying the heterosis and inbreeding depression. Six genetically diverse parents, their 15 F1 one-way hybrids and 15 F2 populations were evaluated under different levels of water treatments. Beside the water treatment and genotype effects, the genetic effects of general (GCA) and specific (SCA) combining ability and their interactions with water treatment were significant for all traits. Water deficit stress decreased all traits in both F1 and F2 generations except for essential oil content which were significantly increased due to water deficit stress. Under water deficit stress, a non-additive gene action nature was predominant in F1 generation while an additive gene action nature was more important in F2 generation for all the traits except fruit yield under severe water deficit stress. There was a positive high he...
Archives of Agronomy and Soil Science
The prediction of fruit yield in next generation is one of the most important breeding objectives... more The prediction of fruit yield in next generation is one of the most important breeding objectives in agricultural research. For this purpose, different generations of coriander consisted six quietl...
Journal of Environmental Chemical Engineering
Abstract In this research, magnetite nanoparticles-activated carbon (MNP-AC) electrode was used a... more Abstract In this research, magnetite nanoparticles-activated carbon (MNP-AC) electrode was used as cathode through the electro-Fenton (EF) process to degrade Phenazopyridine (PhP). Graphite was used as anode and the reaction time was 120 min. The effects of main variables, including the applied current, initial pharmaceutical concentration, pH and magnetite nanoparticles (MNP) used as catalyst were investigated. PhP degradation efficiency observed for this method was 98.21% under optimum conditions (applied current = 0.2 A, [PhP]0 = 30 mg/L, pH = 3 and surface ratio of MNP/AC electrode 1:1). Scanning electron microscopy (SEM), Energy Dispersive X-Ray (EDX), X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR) were performed for analyzing the structure of the electrodes. Oxygen reduction activity of the electrodes was examined by cyclic voltammetry (CV). Total organic carbon (TOC) was performed to investigate the PhP removal efficiency during the reaction time and Gas chromatography–mass spectrometry (GC–MS) were performed to analyze degradation by-products of PhP. In the presence of ethanol, the degradation efficiency of PhP was decreased to 54.34%. The PhP degradation efficiency was decreased about 6.93% after eight repeated runs. Based on the results, it was found this method can remove PhP from polluted water. To predict the performance of the degradation efficiency, artificial neural networks (ANN) model was established based on the experimental data.
International Journal of Research in Medical Sciences
Background: Cerebrovascular accident (CVA) is the third leading cause of death in the United Stat... more Background: Cerebrovascular accident (CVA) is the third leading cause of death in the United States. Considering the diagnostic and clinical value of sonography of extra cranial vessels of the brain, identifying findings obtained from patients suspected of having CVA and Transient Ischemic Attack (TIA) and their prevalence is of great importance. The aim of this study was to investigate the relation between TCD finding, neuroimaging and functional state of ischemic and hemorrhagic CVA patients.Methods: This was a cross-sectional study that has been done on 100 stroke patients admitted to Ardabil city hospital from March 2015 to March 2016. Patients underwent to CT-scan, doppler sonography, and TCD. The obtained data were analyzed by statistical methods in SPSS version 21.Results: The mean age of the patients was 66.3±11 years and 53% were women. High blood pressure, history of heart disease, smoking, and diabetes were the major risk factors in the present study. Fifty eight percent ...
Applied Organometallic Chemistry
PLOS ONE
Knowledge of genetic combining ability and gene action would help breeders to choose suitable par... more Knowledge of genetic combining ability and gene action would help breeders to choose suitable parents and devise an appropriate breeding strategy for coriander. In the present study, six diverse genotypes of coriander, their 15 F 1 s and 15 F 2 s were evaluated through randomized complete block design with three replications to study genetic combining ability for agronomic and phytochemical traits in coriander. Plants were subjected to well-watered (WW), mild water-deficit stress (MWDS) and severe water-deficit stress (SWDS) irrigation regimes. The results indicate that water-deficit stress decreased all of the measured traits in both the F 1 and F 2 generations. General combining ability and specific combining ability effects were highly significant for all of the traits in both the F 1 and F 2 generations. Additive gene action was predominant for phonology and fruit yield component traits in all irrigation regimes in both the F 1 and F 2 generations. For fatty acid content and total lipid yield, nonadditive gene action was predominant in the F 1 generation while additive gene action was predominant in the F 2 generation under MWDS and SWDS conditions. The P 4 parent had the highest general combining ability for fruit yield components in both the F 1 and F 2 generations. The P 6 parent had the highest general combining ability for phenological and phytochemical traits. The P 4 and P 6 parents are promising material to develop early flowering and early maturing genotypes coupled with high total lipids in advanced generations of segregation.
Journal of Environmental Management
In the present study, the potential of Azolla filiculoides (A. filiculoides) was first investigat... more In the present study, the potential of Azolla filiculoides (A. filiculoides) was first investigated for degradation of Phenazopyridine (PhP), an analgesic drug. The effects of main variables such as initial pharmaceutical concentration, amount of plant, and pH were studied on the efficiency of the biological process. It was observed that A. filiculoides was able to remove pharmaceuticals from contaminated water up to 85.90% during 48 h. Then, the electro-Fenton (EF) method was applied for further removal of PhP yielding a removal rate of about 98.72% under optimum conditions during 2 h. The effects of variables including the current, amount of catalyst, and pH were also studied in this phase. Also, the probability of adsorption was investigated during this step. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis were performed for the used magnetite nanoparticles, total organic carbon (TOC) were performed to investigate PhP removal efficiency during the reaction time and Gas chromatography-mass spectrometry (GC-MS) were performed to analyze degradation byproducts of PhP. Based on the results, it was found that a combination of these bioremediation and electrochemical removal steps were capable of PhP removal from contaminated water. Therefore, this approach may be effective for phytoremediation of pharmaceutical-contaminated aquatic ecosystems.
Plant Genetic Resources: Characterization and Utilization
Drought stress restricts the production of agricultural crops through morphological, physiologica... more Drought stress restricts the production of agricultural crops through morphological, physiological and biochemical changes in plants. This study explored the genetic control of physiological traits related to drought in coriander. In a diallel analysis, all six parents, their 15 F1 hybrids and 15 F2 populations were subjected to different irrigation regimes including well-watered, mild and severe water deficit stress. Drought stress decreased the relative chlorophyll content (RCC), the relative water content (RWC), chlorophyll a (Chla), chlorophyll b (Chlb), total chlorophyll (TChl) content, carotenoids (Car) and essential oil yield (EOY) in F1 and F2 generations. General combining ability (GCA) and specific combining ability effects were highly significant for all traits in F1 and F2 generations. Additive gene action was predominant for Chla, Chlb, TChl and Car under well-watered condition while non-additive gene effects were more important under mild and severe water deficit stres...
Materials Research Express
Here, Zinc Oxide nanowires are synthesized using thermal chemical vapor deposition of a Zn granul... more Here, Zinc Oxide nanowires are synthesized using thermal chemical vapor deposition of a Zn granulate source and used to enhance a significant Si-solar cell efficiency with simple and low cost method. The nanowires are grown in various O2 flow rates. Those affect the shape, yield, structure and the quality of ZnO nanowires according to scanning electron microscopy and x-ray diffraction analyses. This delineates that the ZnO nanostructure is dependent on the synthesis conditions. The photoluminescence spectroscopy of ZnO indicates optical emission at the Ultra-Violet and blue–green regions whose intensity varies as a function of diameter of ZnO nano-wires. The optical property of ZnO layer is measured by UV–visible and diffuse reflection spectroscopy that demonstrate high absorbance at 280–550 nm. Furthermore, the photovoltaic characterization of ZnO nanowires is investigated based on the drop casting on Si-solar cell. The ZnO nanowires with various diameters demonstrate different effects on the efficiency of Si-solar cells. We have shown that the reduction of the spectral reflectance and down-shifting process as well as the reduction of photon trapping are essential parameters on the efficiency of Si-solar cells. However, the latter is dominated here. In fact, the trapped photons during the electron–hole generation are dominant due to lessening the absorption rate in ZnO nano-wires. The results indicate that the mean diameters reduction of ZnO nanowires is also essential to improve the fill factor. The external and internal quantum efficiency analyses attest the efficiency improvement over the blue region which is related to the key parameters above.
Journal of Physics D: Applied Physics
Genetika, 2016
Salinity is one of the most important factors that limit crop production in some regions of the w... more Salinity is one of the most important factors that limit crop production in some regions of the world. Knowledge of the interrelationships between yield and its components will improve the efficiency of breeding programs especially under saline conditions through appropriate selection criteria. This study demonstrated that GT biplot was an excellent tool for visual evaluation of superior genotypes, traits and grouping of them with other statistical techniques. The study was conducted under both saline and non-saline conditions in field based on randomized complete block design with three replications. Electrical conductivity of irrigation water were 2 and 10 dS.m-1 in non-saline and saline conditions, respectively. The obtained data were analyzed using a genotype trait (GT) biplot method based on site regression model. The biplot vector view indicate that there was a strong positive association between PH and BY with seed yield in both non-saline and saline conditions. It seems that...
Study of the interrelationships between yield and its components will improve the efficiency of b... more Study of the interrelationships between yield and its components will improve the efficiency of breeding programs especially under saline conditions through appropriate selection criteria. The present research factor analysis was used to obtain more information on the relationship between various characteristics and profound understanding of data structures. Forty one genotypes of bread wheat were grown in two environments (non-saline and saline conditions) based on randomized complete block design with three replications. Electrical conductivity of irrigation water was 2 and 11 dS.m -1 in non-saline and saline environments, respectively. Results indicated that in non-saline environment selection based on the fourth factor including own length and biological yield efficiency have the highest community and high relative contribution in wheat seed yield. On the other hand, the results of factor analysis in the saline environment showed that the selection based on the first factor incl...
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Papers by Amir Gholizadeh