Screening of New Rice Lines with Low Cadmium Accumulation
In order to screen new rice lines with low cadmium accumulation, 20 rice materials/lines bred by Hunan Rice Research Institute were planted in three cadmium-contaminated areas for three consecutive years. The contents of cadmium in rice were detected and compared with those of emergency varieties Xiangwanxian 13 and Yangdao 6, which had low cadmium accumulation and high cadmium accumulation respectively. The results showed that the cadmium contents of 20 materials were lower than that of Yangdao 6, and 16 materials were lower than that of Xiangwanxian 13. Among them, 10 materials such as R1195 were significantly lower than that of Xiangwanxian 13 and 8 materials such as BG130 were most significantly lower than that of Xiangwanxian 13. The low cadmium accumulation male sterile lines W115S and restorer lines R1195 and R1514 were screened out.