Fig. 1From: Identification and evaluation of reference genes for quantitative real-time PCR analysis in Polygonum cuspidatum based on transcriptome dataBoxplot analysis of cycle threshold (CT) values of 12 candidate reference genes across all samples. The boxes represent the interquartile range. The line across the box represents the median. The plus sign in the box show the mean values. Hyphens over and under the boxes is shown as the maximum and minimum, respectivelyBack to article page