【摘要】 为了筛选水稻镉低积累新品系,以湖南省水稻研究所选育出的20份水稻材料/新品系为试验材料,连续3 a种植在3个不同污染程度的镉污染区,以镉低积累应急品种湘晚籼13号和镉高积累品种扬稻6号为对照,检测稻米镉含量并进行比较分析。结果表明:20份材料的稻米镉含量均低于扬稻6号,16份材料稻米镉含量低于湘晚籼13号,其中R1195等10份材料显著低于对照湘晚籼13号,BG130等8份材料极显著低于对照湘晚籼13号。试验筛选出镉低积累不育系W115S和恢复系R1195、R1514。更多还原

【Abstract】 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 W115 S and restorer lines R1195 and R1514 were screened out.更多还原