Fig. 1: Sympatric region and genetic diversity of Citrus species from southern China.
a, The geographical distribution of sweet oranges, sour oranges, mandarins and pummelos. The geographical map was generated manually using the freeform shape function of Microsoft PowerPoint software. b, Phenotypic variation among different sweet oranges, sour oranges, mandarins and pummelos in the sympatric region. c, PCA of 35 sweet oranges, 99 sour oranges, 11 mandarins and 16 pummelos. The red five-pointed star represents sweet oranges, orange circles represent sour oranges, red circles represent mandarins and yellowish green circles represent pummelos. d, The π values were calculated with 1 Mb sliding windows with 500 kb steps for sour oranges, mandarins and pummelos. The number of genomic statistical windows is 545. Each box represents the median and interquartile range. The error bars represent s.e.m. e, Coefficients of metabolite variation for sour oranges, mandarins and pummelos.
