Cadmium (Cd) is a toxic element that can accumulate in rice grains, presenting a threat to human health. Indica rice hybrid is dominant in southern China, and this genetic background is linked to high-level Cd accumulation in grains. Thus, lowering grain Cd levels in indica hybrids is a priority in the breeding programs. Previously, a locus on chromosome 7 was found to be associated with grain Cd variation in 617 rice hybrids and exhibited apparent indica–japonica differentiation. In this present study, a backcross population was generated to ...
