Genetic Loci Governing Grain Yield and Root Development under Variable Rice Cultivation Conditions.

ABSTRACT: Drought is the major abiotic stress to rice grain yield under unpredictable changing climatic scenarios. The widely grown, high yielding but drought susceptible rice varieties need to be improved by unraveling the genomic regions controlling traits enhancing drought tolerance. The present study was conducted with the aim to identify quantitative trait loci (QTLs) for grain yield and root development traits under irrigated non-stress and reproductive-stage drought stress in both lowland and upland situations. A mapping population consisting of 480 lines derived from a cross between Dular (drought-tolerant) and IR64-21 (drought susceptible) was used. QTL analysis revealed three major consistent-effect QTLs for grain yield (qDTY_1.1, qDTY_1.3 ,

SUBMITTER: Catolos M 

PROVIDER: S-EPMC5650699 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature