Figure 5From: Validation of reference genes for quantitative real-time PCR during leaf and flower development in Petunia hybridaMinimum number of genes necessary for reliable and accurate normalization. GeNorm pairwise variation values (PV values) are computed by an algorithm which measures pairwise variation (Vn/n + 1) between two sequential normalization factors NFn and NFn + 1, where n is the number of genes involved in the normalization factor. (a) refers to Mitchell line and (b) to V30.Back to article page