Breeding for three-line japonica hybrid rice combinations with high resistant starch content using molecular marker-assisted selection.

ABSTRACT: Resistant starch (RS) is beneficial for human health, and especially for diabetics. Considering the high cost and low productivity of the Jiangtangdao 1 rice variety with high RS content, breeding high RS rice varieties exhibiting high productivity is essential. A molecular marker-assisted selection strategy was applied to increase RS content in a three-line hybrid rice variety. The functional rice variety Jiangtangdao 1, which contains sbe3-rs (on chr2) that controls the RS content, was used as the high RS content donor parent. Subsequently, male sterile maintainer and restorer lines containing homozygous sbe3-rs were bred using molecular marker-assisted selection combined with traditional breeding methods. The male sterile line was crossed with the restorer lines to identif

SUBMITTER: Yang R 

PROVIDER: S-EPMC7372024 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature