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. 2017 Jun 21;10:159. doi: 10.1186/s13068-017-0848-3

Fig. 9.

Fig. 9

Heatmap of genes encoding transcription factors differentially expressed between four sub-apical internodes of bioenergy sorghum inbred R.07020. Int1 is the youngest sub-apical and Int4 is the oldest internode. Gene expression level in RPKM in each internode was normalized