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To attempt to understand the differences between rice genotypes in lead (Pb) tolerance, pot soil experiments were conducted with two rice genotypes at different soil Pb levels, i.e. 0 (the control), 800, 2000 mg kg-1. The results showed that the soil Pb concentration of 800 mg kg-1 is moderately toxic to rice, with 10%-30% decreases in plant biomasses. The soil Pb concentration of 2000 mg kg-1 is...
To attempt to understand certain mechanisms causing the variations between rice genotypes with regard to Pb uptake and accumulation, pot soil experiments were conducted with two rice genotypes at different levels of Pb, i.e., 34.05 (the control), 800, 2000 mg Pb kg-1 soil. The two rice genotypes differ significantly with regard to Pb uptake and accumulation. Root secretions of low-molecular-weight...
In this research, the cement/activated-carbon solidification/stabilization (S/S) technology was used to treat contaminated soil with 500 ppm phenol, choosing ordinary Portland cement (30% or 50% w/w of contaminated soil) and activated carbon (0%-10% w/w of contaminated soil) as binder and additive respectively. The leaching test, long-term leaching test, and pore size distribution analysis of the...
In order to understand the mechanisms of the variation among rice genotypes and cultivars in Pb uptake and accumulations, pot soil experiments were conducted with six rice cultivars that varied greatly in Pb uptake. The results showed that root oxidation abilities of the rice plants differed with genotypes and cultivars, and those of the cultivars with indica consanguinity were significantly higher...
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