Figure 2

geNorm analysis for ranking of genes based on average expression stability measure (M value), Pair-wise variation (Vn/Vn + 1) between the normalization factors NFn and NFn + 1 to determine the optimal number of reference genes and Normfinder analysis in LAC (a–c), LAY (d–f), LAD (g–i), CHG (j–l), DHC (m–o) and ZAP (p–r respectively).