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Articles by S. Ghorbani
Total Records ( 4 ) for S. Ghorbani
  S. Ghorbani , B.N. Khiabani , I. Amini , M.R. Ardakani , H. Pirdashti and S.R. Moakhar
  In order to study the influence of iron and zinc elements on yield and yield components of wheat mutant lines during 2006-2007, an experiment was conducted in form of factorial based on complete randomized block design with four replications. Factors include genotype (Tabasi, T-65-7-1, T-65-5-1, T-66-67-60, T-65-58-8) and fertilizer [N, N+Fe, N+Zn, N+Fe+Zn]. Results showed that genotype had high significant effect on GY, by, HI, grain number per spike and spike number per square meter. Iron and zinc fertilizers had significant effect on grain yield and harvest index. Biological yield was not significantly different by imposing of mentioned fertilizer applications. Seed number in spike correlated with seed weight in per spike. Spike number in plant had correlation with spike number in m2, straw yield and hectoliter seed weight. Seed weight in per spike had relationship with grain yield, harvest index and thousand seed weight.
  M. Tavassoli , N. Shahraeen and S. Ghorbani
  During 2006-2007 growing seasons, survey were carried to identify a virus disease causing mosaic of soybean in the field in Southern region (Khozestan Province) of Iran. To detect the viral infection, diseased leaf samples showing mild mosaic and leaf malformation were collected from soybean fields in Dezful, located in Khozestan Province. Infected samples were carried to the lab in a proper condition on ice packages. TPIA and DAS-ELISA serological tests were applied to identify the viral agent. To investigate the host-range, several indicator plants were mechanically inoculated under green-house condition. Seed transmission of CPMMV was examined using the seeds obtained from infected plants. The virus isolate was not found to be seed-borne in Clark variety of soybean. Different steps of ultracentrifugation including sucrose density gradient (10-40%) were carried out in order to obtain partial purified virus. On the basis of biological, serological and EM results, CPMMV-Carla virus was identified in the infected soybean samples. This is the first report of CPMMV infection of soybean in Iran.
  Y. Javadi Esfehani , K. Khavazi and S. Ghorbani
  To study the cross interaction of microorganisms in plant growth promotion and the effect of auxin in this interaction, Pseudomonas putida and Glomus intraradices were co-inoculated on wheat. For this purpose, a mutant that produced less amount of auxin was derived from the bacterial strain by chemical mutagenesis with ethyl methane sulfonate. Next both the wild-type strain and the mutant strain were labeled with gusA for a better detection on the roots. Finally, the bacteria were inoculated on wheat as single inoculants or combined with arbuscular mycorrhizal fungi. Controls included non-bacteria/non-arbuscular mycorrhizal fungi and arbuscular mycorrhizal fungi alone. Plants co-inoculated with the wild-type bacterial strain and Glomus intraradices had the highest stem and their fresh and dry shoot weight was more than other treatments. Also, it was observed that the wild-type strain significantly improved the mycorrhizal colonization which implies the beneficial effect of auxin on mycorrhizal colonization. Furthermore, Glomus intraradices increased the population density of the wild-type strain in the endorhizosphere. In the microscopic studies of plant roots, bacterial colonies were observed as blues lines on the surface and inside the roots as well as on the seed surfaces.
  Saghar Rasaei Moakhar , B.Naserian. Khiabani , I. Amini , M.R. Ardakani , H. Pirdashti and S. Ghorbani
  In order to evaluate the reaction of yield and yield components of wheat’s mutant lines to different levels of nitrogen in the crop year of 2006-2007, an experiment was conducted as factorial based on completely randomized block design in 4 replicates in the Research Farm of Agricultural, Medical and Industrial Research School in Zaferaniyeh-Karaj-Iran the first factor included 5 genotypes of wheat (Tabasi-the maternal entity, T-65-7-1, T-65-5-1, T-6-67-60, T-65-58-8) and the second factor consisted of 4 levels of nitrogen (100, 140, 180 and 220 kg ha-1 urea 46%). The result showed that grain’s yield harvest index, number of grain/spike in mutant lines and their parent had significant difference (p<0.01) in mutant genotypes, meanwhile, the biological yield and the number of spike m-2 were not significant difference (p<0.05). The harvest index, number of grains per spike, grain’s yield, biologic yield and number of spikes m-2, weight of 1000 grains didn’t affected by applying different levels of nitrogen fertilizer.
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