Fig. 5From: Full-length transcriptome analysis of Phytolacca americana and its congener P. icosandra and gene expression normalization in three Phytolaccaceae speciesRNA transcription levels of seven candidate reference genes in P. americana, P.icosandra and P. acinosa. The expression level of candidate reference genes in total samples (n = 99) was presented as cycle threshold number (Ct-value) and explained by box and whisker plots. The asterisks represented the minimum and maximum Ct value. The squares indicated the 25th and 75th percentiles, and the median was represented by a bar across the squareBack to article page