Fig. 2: Genomic diversity variation among four populations might result from the switching between sexual and asexual propagation in S. polyrhiza.
a Scheme of asexual and sexual propagation cycles in S. polyrhiza. (A) Vegetative stage of S. polyrhiza; (B) Budding; (C) Offspring from clonal propagation; (D) S. polyrhiza flowering; (E) Putative schematic of ovule at endosperm cellularization stage; (F) Putative schematic of seeds. b Bar plots show the differences among the four populations in terms of “π”: genome-wide nucleotide diversity; “LD”: the physical extent (in kb) of pairwise SNPs at r2 of 0.2 (Europe does not yet reach r2 = 0.2 at 100 kb, Supplementary Fig. 5); “πN/πS”: the efficacy of linked selection; “r”: genome-wide recombination rate; “H”: the median of per population genome-wide heterozygosity rate. c Two panels of pie charts indicate the allele frequencies of the functional allele of SOC1-like and AGL62-like genes among populations. Gray: functional allele frequency; Black: SVs allele frequency. d The distribution and migration world map of the four S. polyrhiza populations. “+” suggests the increased functional allele frequency, while “-” suggests the decreased functional allele frequency.
