Fig. 6.

Haplotype analyses for the C/N ratio and nucleotide diversity of the LOC_Os05g43880 candidate gene at qCN-5.2. a Haplotype analyses and comparisons of the mean C/N ratio vs LOC_Os05g43880 haplotypes in five rice subgroups. Each red point around each boxplot indicates the C/N ratio of one accession with the relative haplotype in its subgroup. Haplotypes in fewer than 10 accessions are not shown. b Nucleotide diversity (π) and (c) the ratio of the nucleotide diversity between modern varieties and landraces for the 600-kb genomic region flanking LOC_Os05g43880. Red and blue lines represent XI and GJ subgroups, respectively. The translucent green rectangle represents the LOC_Os05g43880 genomic region. d Frequencies of different haplotypes of LOC_Os05g43880 in XI and GJ landraces and modern varieties