Author Contributions
Designed the study: SZ, XY
Provided plant materials: XZ
Performed the experiment: WZ, YS, JL, CX, XC, YL
Analyzed the data: SZ, WZ, YZ, PW
Wrote the paper: SZ, WZ, YS
All authors commented on the manuscript and approved the final version

Data Accessibility

DNA sequences: GenBank accession numbers are awaiting submission and will be attached later. All additional information is available in the manuscript.

Tables

Table 1. Plant materials ofOryza sampled in this study with Leersia species as outgroups.
Table 2. Primers designed to amplify six chloroplast regions and two nuclear genes. Information of nucleotide diversity and expected lengths, and number of variable sites of the eight markers together with three conventional DNA barcodes and the chloroplast genome super barcode.
Table S1. Generally accepted species in Oryza with chromosome number, genome type and distribution information.
Table S2. Initial variability evaluation of the chloroplast genomes ofOryza species and 36 variable regions were listed. S: variable sites; h: number of haplotypes; Pi: nucleotide diversity; k: average number of nucleotide differences.
Table S3. Chloroplast genomes of Oryza and Leersia species downloaded from GenBank.