Preliminary Study on Screening Early Rice Varieties for Low Cadmium Accumulation in Grains and High Yield

Key Points

• The aim is to screen early rice varieties for low cadmium accumulation and high yield to help develop new varieties.
• Selected 59 rice varieties in Jiangxi Province for field trials.
• Measured rice yield, brown rice cadmium content, and cadmium accumulation coefficient.
• Compared different rice varieties under light and moderate cadmium contamination.
• In light cadmium contamination fields, yield ranged from 5.1 to 8.9 t/hm2 with significant differences.
• In moderate cadmium contamination fields, yield ranged from 4.45 to 8.87 t/hm2, showing even greater differences.
• In light contamination, 50 varieties had brown rice cadmium levels below the national limit of 0.200 mg/kg.
• In moderate contamination, 16 varieties also met the national standard.
• Ten rice varieties suitable for low cadmium and high yield were identified for light contamination conditions.