Fig. 5

Transcription factors (TFs) identification and analysis in DEGs. a The classifications of the 1,258 TFs. b Hierarchical clustering heatmap of the 135 MYB encoding genes, which were grouped into five clusters according to their expression profile. c qRT-PCR of the eight genes encoding different TFs that have been documented to affect fiber initiation and elongation. The GhHistone3 (AF024716) gene was used as reference gene, and data were shown as mean ± SD. The student’s t-test was used for the significance statistic