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Articles by Reza Heidari
Total Records ( 4 ) for Reza Heidari
  Nayer Mohammadkhani and Reza Heidari
  Responses of growth and germination to water stress induced by PEG 6000 and NaCl in two maize (Zea mays L.) cultivars 704 and 301 were studied. Water stress was generated by additions of PEG 6000 or sodium chloride to the root medium. Water potentials were: zero as control and -0.15, -0.49, -1.03 and -1.76 MPa as treatments. After 24 h treatment, the roots and shoots length and dry weight were of plants determined. In water stress, roots and shoots length and dry weight decreased at both treatments in both varieties. The germination is inversely proportional to the NaCl and PEG concentrations, it means that 704 and 301 cultivars of maize showed a reduction in germination with an increasing in NaCl or PEG concentrations induced water deficit, but this reduction in NaCl treatment were higher than PEG treatment. At treatment by PEG, the germination was severely decreased at -1.03 MPa. At treatment by NaCl no germination occurred at -1.03 in 301 var. and germination was very low at -1.03 MPa in 704 var., no germination occurred at -1.76 MPa in both varieties at both treatments. Decrease of germination in 704 variety was higher than 301 variety.
  Simin Afsha , Reza Heidari , Amir Abbas Farshid and Minoo Ilkhanipour
  The aim of this study was to evaluate the effects of acute exposure to various doses of fenitrothion (FNT) on level of serum glucose, total protein, triglycerides (TG), total cholesterol (TC) and some hematological parameters. The study was conducted on 8-week old male Wistar rats that divided into four groups (three experimental groups and one control group), were treated orally with different doses (25, 50 and 100 mg kg-1) of fenitrothion for 28 consecutive day. After treatment, blood samples were collected for biochemical and hematological studies. Present results demonstrated that exposed groups led to significant dose-dependent increase in serum glucose and cholesterol levels. Significant decrease was observed in some hematological parameters [Red Blood Cell (RBC) counts, Hemoglobin (Hb), Haematocrite (Ht) and Mean Corpuscular Hemoglobin (MCH) values]. Serum total protein and triglycerides were also decreased not significantly in exposed groups when compared with control. Generally, the degrees of observed variations were found to be dose dependent.
  Fatemeh Nejad Habibvash , Mohammad Ali Rajamand , Siavash Hosseini Sarghein , Reza Heidari and Mahnaz Heidari Ricani
  Present survey was performed on thirteen species of Salvia from West Azarbaijan in Iran with the aim of illustrating species interrelationships. It includes comparative anatomy of the species based on nutlets transverse sections. These sections were examined using light microscope and detailed description of nutlet anatomical feature for all examined taxa is provided. In this study its found that the nutlets showed a considerable uniformity from anatomical point of view. However these species can be differentiated based on thickness of pericarp layer and parenchymatous layers colour.
  Fatemeh Nejad Habibvash , Mohammad Ali Rajamand , Reza Heidari , Siavash Hosseini Sarghein and Mahnaz Heidari Ricani
  Nine species of Salvia L. growing naturally in West Azarbaijan in Iran were selected as the study materials. The phenolic compounds extracted from the leaves of these species, were separated by one-dimensional chromatography and total content of phenolic compounds was measured. In order to determine the relations among the species according to the phenolic spots distribution, matching coefficient and similarity coefficient were calculated and based upon these coefficients, species were categorized as two groups. Also it was found that total content of phenolic compounds is an important factor in the distinction of these species.
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