Fig. 1: Transcriptome analysis of petal development in L. tulipifera.

a Petal samples at four developmental stages (S1P, S2P, S3P, and S4P), a sepal sample at the third developmental stage (S3S), and the lower side (S3PL) and upper side (S3PU) of a petal sample at the third developmental stage. b Hierarchical clustering of unigene expression. The detailed sample and developmental stage selection procedures are included in Supplementary Fig. 1