Fig. 4

Characteristics of differentially expressed miRNAs between hybrid combinations and their parental lines and classification of the differentially expressed miRNAs. a-d Venn diagram of differentially expressed miRNAs between the four hybrid combinations and parental lines. e Expression pattern classification of the differentially expressed miRNAs in the four hybrid combinations. “++”, extremely high parental expression; “+”, high parental expression; “+−”, additive expression; “-”, low parental expression; “--”, extremely low parental expression. f Venn diagram of the expression patterns of scaled miRNAs in the four hybrid combinations