Combining drought and submergence tolerance in rice: marker-assisted breeding and QTL combination effects.

ABSTRACT: TDK1 is a popular rice variety from the Lao PDR. Originally developed for irrigated conditions, this variety suffers a high decline in yield under drought conditions. Studies have identified three quantitative trait loci (QTLs) for grain yield under drought conditions, qDTY_3.1 , qDTY_6.1 , and qDTY_6.2 , that show a high effect in the background of this variety. We report here the pyramiding of these three QTLs with SUB1 that provides 2-3 weeks of tolerance to complete submergence, with the aim to develop drought- and submergence-tolerant near-isogenic lines (NILs) of TDK1. We used a tandem approach that combined marker-assisted backcross breeding with phenotypic selection to develop NILs with high yield under

SUBMITTER: Dixit S 

PROVIDER: S-EPMC5670188 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature