Fig. 5

Haplotype classification and multiple comparisons of Rf4 (a, b) and Rf5 (c, d). In a and c, the white boxes represent the coding region of Rf genes, black vertical lines represent SNPs relative to the H1 type, and black triangles represent large insertions. In b, superscript letters indicate statistically significant differences among mean values of different haplotypes in year 2014 (Tukey test, P < 0.05). The number of F₁ lines carrying the four haplotypes were 22, 59, 17 and 163, respectively