Analysis of evolutionary relationships provides new clues to the origins of weedy rice.

ABSTRACT: Weedy rice (WR) (Oryza sativa f. spontanea) is considered to be a pest in modern rice production systems because it competes for resources, has poor yield characteristics, and subsequently has a negative effect on rice grain yield. The evolutionary relationships among WR, landrace rice (LR), improved rice (IR) cultivars, and wild rice are largely unknown. In this study, we conducted a population genetic analysis based on neutral markers and gene haplotypes in 524 rice accessions and a comparative transcriptomic analysis using 15 representative samples. The results showed that WR populations have the highest level of genetic diversity (H _e = 0.8386) and can be divided into two groups (japonica-type and indica-type). The japonica-type WR accessio

SUBMITTER: Han B 

PROVIDER: S-EPMC6988545 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature