High Resolution Mapping of QTLs for Heat Tolerance in Rice Using a 5K SNP Array.

ABSTRACT:

Background

Heat stress is one of the major abiotic threats to rice production, next to drought and salinity stress. Incidence of heat stress at reproductive phase of the crop results in abnormal pollination leading to floret sterility, low seed set and poor grain quality. Identification of QTLs and causal genes for heat stress tolerance at flowering will facilitate breeding for improved heat tolerance in rice. In the present study, we used 272 F₈ recombinant inbred lines derived from a cross between Nagina22, a well-known heat tolerant Aus cultivar and IR64, a heat sensitive popular Indica rice variety to map the QTLs for heat tolerance.

Results

To enable precise phenotyping for heat stress tolerance, we used a controlled phenotyping facility available at ICAR-Ind

SUBMITTER: Ps S 

PROVIDER: S-EPMC5459777 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature