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Articles by M. Ghorbanli
Total Records ( 3 ) for M. Ghorbanli
  M. Farzami Sepehr , M. Ghorbanli and R. A. Khavari Nejad
  The effects of 0, 2.5, 5 and 10 μ (Cd+2) [Cd( NO3)2x4H2O] and 0, 10, 25, 50 and 100 mM NaCl on certain parameters of growth and photosynthesis and different ionic contents in maize (Zea mays L. single cross) were studied. With increasing Cd+2 and NaCl alone to Hogland nutrient solution, the contents of chlorophyll (Chl) and starch content decreased. Interaction effect of salinity and cadmium caused decrease of negative effects of two stress and the results indicate that plants whose growth has been retarded by a mild level of one stress factor (in this case 25 and 50 mM NaCl) may become more tolerant to a second stress factor (Cd). The addition of cadmium caused a partial elimination of salinity effects on roots and shoots and growth parameters, ions accumulation and photosynthetic parameters were improved at mild concentrations of two stresses.
  M. Borji , M. Ghorbanli and M. Sarlak
  The size of the seeds, shape index, shape of the seeds, 100-seed-weight, germination and emergence tests, the values of the test a rates, the speed of the imbibition and electrical conductivity were determined in 10 common bean cultivars in two group of red and white bean (Phaseolus vulgaris L.). In bean cultivars, the seed lengths (11.24-14.35 mm), the seed width (6.57-8.99 mm), the seed thickness (4.78-5.57 mm), shape index (1.66-2.09), 100-seed-weight (33.69-23.20 g), the power of germination (76-100%), the rate of emergence (86.66-100%), seed coat rate (7.76-10.53%), water imbibition (52.5-108.6%) and electrical conductivity (1.99-5.87 m Sc mg/seed) were found. In all bean cultivars, there was a positive correlation between the values of electrical conductivity (used as an indicator of seed secretion) and imbibition rate. Also, there was a negative relation between the values of electrical conductivity and power of germination (r = -0.78298**), between seed coat rate and water absorption at 3 h (-0.54**) between power of germination and water absorption at 3 h (-0.46**). There was a negative relation, but not significant between electrical conductivity and seed emergence. There was a very significant and negative relation between seed coat rate and power of germination between electrical conductivity and power of germination. Also there was a significant relation between power of germination and water absorption between seed weight and water absorption and there was a very significant positive correlation between seed coat rate and electrical conductivity in white bean. In red bean, there was a very significant negative correlation between electrical conductivity and seed weight positive significant correlation between water absorption at 19-23.5 h and power of germination. Also, correlation between water absorption at 1.5 h and electrical conductivity rate of emergence and electrical conductivity was positive and significant.
  M. Ghorbanli , Z. Bakand , G. Bakhshi khaniki and S. Bakand
  The air pollution effects on the activity of antioxidant enzymes were investigated on Nerium oleander and Robinia pseudo acacia in Tehran. Considering the information obtained from the Department of the Environment of Iran, Sorkh Hesar Park as well as South Azadi were selected as two sampling sites representing the unpolluted and polluted area respectively. A number of plant leave samples were collected from both sampling sites simultaneously. The activity of plant enzymes including peroxidase, catalase and ascorbate peroxidase was investigated using spectrophotometric methods. A higher level of peroxidase and catalase enzymes were measured in both plant samples collected from polluted area. However, this higher level was only statistically significant for the activity of peroxidase enzyme in Robinia pseudo acacia plants compare of to the control group (p < 0.05). The lower level of ascorbate peroxidase was observed in Nerium oleander plant leaves collected from the contaminated sampling site (p < 0.05), but though, the activity of this enzyme in Robinia pseudo acacia did not change significantly. The overall plant injury symptoms found in this study demonstrated that both Nerium oleander and Robinia pseudo acacia have a potential to be considered as effective bioindicators to reflect the environmental air quality in polluted areas.
 
 
 
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