Primers were designed based on p16 gene from Ectropis obliqua nucleopolyhedrovirus in order to optimize the detection method of SYBR Green I real-time fluorescence quantitation PCR for EoNPV, and the standard curve of SYBR Green I real-time fluorescence quantitative PCR for p16 gene was established using the recombinant plasmid DNA as template. Statistic analysis showed that there was a good linear relationship between Ct value and the logarithmic value of plasmid concentrations (R2=0.9981). The sensitivity of the method was 102 copies/μl, and wide detection range of 6 orders of magnitude was obtained. Larave infected at different time were sampled and detected by the method, and the results showed that there was a good linear relation between the logarithmic value of the multiples of gene copies and the infection time (R2=0.9935). Experimental results indicated that the method can identify biological pesticides from qualitative and quantitative aspects, and distinguish the high homology nuclearpolyhedrosisvirus (Euproctis pseudoconspersa nuclearpolyhedrosisvirus) from EoNPV accurately.
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