Fig. 5From: Identification and expression analysis of GRAS transcription factors in the wild relative of sweet potato Ipomoea trifidaExpression profile of ItfGRAS genes among different tissues using RNA-seq. The FPKM values normalized by Z-score are used to measure the expression levels of ItfGRAS transcription factors among various tissues. These tissues include the root, stem, flower, flower bud and leaf. The coloured scale varying from green to red indicates relatively low or high expression. The values of these GRAS genes are listed in Additional file 5: Table S4Back to article page