Fig. 1

Identification and characterization of long non-coding RNAs (lncRNAs) in sunflower endosperm at 12 DAP. A Schematic pipeline for the identification of lncRNAs in sunflower endosperm; B Expressed lncRNAs in two crosses. Venn diagrams showing the number of common and specific lncRNAs in the four libraries; C Distribution of the lincRNA (red), sense lncRNA (purple), antisense lncRNA (blue) and intron lncRNA (green) on each chromosome; D Classification of total identified lncRNAs including lincRNA, antisense-lncRNA, intronic-lncRNA and sense-lncRNA; E Length density distributions of long non-coding RNAs (lncRNAs) and protein-coding genes (PCgenes); F Distribution of exon numbers in lncRNAs and PCgenes