Fig. 3. Expression profile of ethylene related genes.

Rt-qPCR expression profile of candidate genes related to ethylene biosynthesis (ACS and ACO), perception (ERS1), and signaling transmission (ERF1 and ERF2) in untreated (CT) or treated “Blanquilla” pears (1-MCP, ET, and lovastatin) after 4 months of cold storage, and after 4 months of cold storage plus 5 days of ripening at 20 °C (SL). The error bars represent the standard error of the mean- normalized expression. Different letters above each column indicate significant differences between treatments for each specific sampling (4 m or 4 m+SL). Absence of letters indicates no significant differences between treatments