Fig. 6From: Identification and profiling of upland cotton microRNAs at fiber initiation stage under exogenous IAA applicationComplete hierarchical cluster analysis of differentially expressed miRNAs in cotton ovules. The analysis was performed by comparing the TPM of miRNAs among control and IAA treated (− 3, 0 and 3 DPA) libraries (C_1, C_2, C_3, I_1, I_2, and I_3). The color indicates the log10 (TPM + 1) change from high (red) to low (blue), as indicated in the color scale. MiRNA names are on the right, and the classes (a-d) they belong are shown on the leftBack to article page