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Articles by Zhihe Yu
Total Records ( 1 ) for Zhihe Yu
  Hancheng Wang , Jin Wang , Haiqian Xia , Yanfei Huang , Maosheng Wang , Mengao Jia and Zhihe Yu
  Tobacco bacterial wilt caused by Ralstonia solanacearum is one of the most destructive diseases suffered to tobacco in China. Streptomycin, calcium oxide, mancozeb and synthetic fertilizer are four important non-target chemicals used frequently during tobacco growing period. This study has evaluated the activities of four this chemicals against R. solanacearum. Phenotypic pattern of R. solanacearum under pressure of those chemicals are also compared with control treatments. Ralstonia solanacearum was more sensitive to mancozeb (EC50 value of 3.80 μg mL‾1), less sensitive to streptomycin (EC50 value of 32.06 μg mL‾1) and not sensitive to calcium oxide and synthetic fertilizer (EC50 values >1000 μg mL‾1). Under greenhouse condition the disease severity was reduced by 94.96 and 63.03% with mancozeb and streptomycin treatment, respectively. Metabolic reaction of R. solanacearum on Biolog GEN III Microplates was not or poorly affected by synthetic fertilizer or calcium oxide while significantly inhibited by mancozeb and poorly inhibited by streptomycin.
 
 
 
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