Fig. 4From: Selection of the optimal reference genes for expression analyses in different materials of Eriobotrya japonicaRelative expression levels of EjCDKB1;2 normalized to the most and least stable RG sets. a Fruit development and b seed development. OV1 and OV2 were ovules in flowers of 4 and 1 day before anthesis. The most stable RG set included RPL4, RPL18, HIS3 and TUA3. The least stable RGs included SAMDC, PIP2 and 18SBack to article page