Fig. 5.

Chlorophyll concentrations and the related unigenes. a The chlorophyll a and b concentrations were determined at different stages. The asterisk indicates a significant difference between the YG or W stages and the G stage (P < 0.05; Student’s t-test). b Chlorophyll biosynthesis pathway. The bracketed numbers in red following each gene name indicate the number of corresponding unigenes identified in our database. c All differentially expressed genes involved in chlorophyll biosynthesis were hierarchically clustered and mapped using the fragments per kilobase of exon per million mapped reads values. Colors indicate the normalized signal intensity as defined in the bar