1 research outputs found
Effects of Interaction between Cadmium (Cd) and Selenium (Se) on Grain Yield and Cd and Se Accumulation in a Hybrid Rice (<i>Oryza sativa</i>) System
A pot experiment
was conducted to investigate the interactive effects
of cadmium (Cd) and selenium (Se) on their accumulation in three rice
cultivars, which remains unclear. The results showed that Se reduced
Cd-induced growth inhibition, and increased and decreased Se and Cd
concentrations in brown rice, respectively. Cadmium concentrations
in all tissues of the hybrid were similar to those in its male parent
yet significantly lower than those in its female parent. Selenium
reduced Cd accumulation in rice when Cd concentration exceeded 2.0
mg kg<sup>–1</sup>; however Se accumulation depended on the
levels of Cd exposure. Finally, Cd had minimal effect on Se translocation
within the three cultivars. We concluded that Cd concentration in
brown rice is a heritable trait, making crossbreeding a feasible method
for cultivating high-yield, low-Cd rice cultivars. Selenium effectively
decreased the toxicity and accumulation of Cd, and Cd affected Se
uptake but not translocation