Fig. 2From: Identification and evaluation of PCR reference genes for host and pathogen in sugarcane-Sporisorium scitamineum interaction systemDetermination of the optimal number of sugarcane (a) and S. scitamineum (b) reference genes for normalization by pairwise variation. Pairwise variation (Vn/Vn + 1) was analyzed between normalization factors NFn and NFn + 1 by geNorm algorithm to determine (V < 0.15) the optimal number of reference genesBack to article page