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Expression of floral organ identity genes and the 18S orthologue in different floral organs of C. maximus. Ten flower buds at late developmental stage (18–20 mm in length showing petal tip) were individually dissected to obtain a mixed sample of each floral organ. Relative mRNA levels were determined using qRT-PCR, calculated and presented on a logarithmic scale across all the tested genes. Values are mean ± s.e. of three replicates.
