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Articles by M. Esmailzadeh
Total Records ( 2 ) for M. Esmailzadeh
  J. Arshami , M. Heydar-Poor , H. Zarghi , M. Pilevar and M. Esmailzadeh
  Oxymetholone at 0.6 mg/kg feed or mixed with ZnSO4 (45mg/kg feed), testosterone at 10 mg/kg feed or mixed with ZnSO4 (45 mg/kg feed) and 0 mg/kg of either one were given to 180 turkey chicks (n = 9; r = 4) from 6-18 weeks of age to determine their effects on growth performance. Body Weight (BW) was increased gradually in all treatments when compared to the control group with the highest level for oxymetholone and testosterone alone respectively. Feed Intake (FI) during 12 weeks of study decline slightly in all treatments with the lowest level for oxymetholone + ZnSO4 and the highest level for control group. Feed Conversion Ratio (FCR) at the end of study was 4.77 for control group and 4.15, 4.32, 4.50 and 4.69 for different treatments, respectively. Growth Rate (GR) differed for each week and treatment. Overall, the treatment groups showed higher GR when compared to control group in every week. The percentage of Carcass Weight (%CW) was increased significantly (p<0.05) in all treatments in comparison with control group with highest level for testosterone + ZnSO4. The treatments did not influence significantly on the internal organs by the end of study. Oxymetholone induced BW and %CW (p<0.05) with less FI and FCR when compared to testosterone and control group in turkey chicks.
  M. Esmailzadeh , M.J. Soleimani and H. Rouhani
  Tomato stem canker caused by Alternaria alternata f. sp. lycopersici, is one of the most devastating diseases worldwide. In this study, possible effect of using Salicylic Acid (SA) in host resistance induction against tomato stem canker was investigated. Foliar applications of salicylic acid with two concentrations of 200 and 400 μM were tested against fungal pathogen. The results demonstrated that use of 200 μM dosage of SA was insufficient for inducing disease resistance. However, applications of SA in concentration 400 μM significantly reduced disease index as compared with infected control. There were significant effects of plant cell reactions in terms of percentage of penetration events that occurred at the site of attempted penetration. SA pre-treated plants were identified with higher numbers of single cell necrosis (hypersensitive response), but lower blighted areas and discolorations, as compared with non treated plant (control). The results obtained from high performance thin layer chromatography (HPTLC) analysis indicated that there is highly correlation between increasing of the endogenous levels of free SA in treated plants and reduction of the blighted leaf areas. SA pre-treatment plants caused an increase in the endogenous free SA levels in tomato leaves which resulted in systemic resistance induction.
 
 
 
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