作 者：
冯文强;涂仕华;秦鱼生;熊洪;徐富贤;孙锡发;廖鸣兰
单 位：
四川省农业科学院土壤肥料研究所;四川省农业科学院水稻高粱研究所
关键词：
水稻基因型;重金属;保持系;恢复系;精米
摘 要：
利用盆栽试验探讨了四川20个水稻育种材料(其中保持系和恢复系各10个品系)对外源污染物铅(Pb)、镉(Cd)的吸收能力及这两种重金属在稻草和稻米中的分配差异。结果表明,Pb或Cd胁迫下,水稻不同基因型对其吸收存在明显差异。在供试验材料中,最不易受Pb污染材料为Y11,稻米未检出Pb,其稻草中的Pb最不易向子粒转移;最不易受Cd污染的材料为Y16,稻米含Cd0.15mg·kg-1,含量低于无公害大米标准(NY5115-2002)。最易受Pb污染的材料分别为Y07和Y17,而最易受Cd污染的材料分别为Y07、Y05和Y17。稻米对Cd的富集能力大大高于对Pb的富集能力。恢复系抗Pb或Cd污染的能力优于保持系。
译 名：
Uptake Capacity of Different Rice Genotypes for Lead and Cadmium from Soil
作 者：
FENG Wen-qiang1,2, TU Shi-hua1,2, QIN Yu-sheng1,2, XIONG Hong3, XU Fu-xian3, SUN Xi-fa1, LIAO Ming-lan1 (1.Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066,China; 2.Key Laboratory of Agricultural Resources and Environment of Upper Reaches of Yangtze River, Ministry of Agriculture, Chengdu 610066, China; 3.Rice and Sorghum Institute, Sichuan Academy of Agricultural Sciences, Luzhou 646000, China)
关键词：
rice genotype; heavy metal; lead; cadmium; maintainer; restorer; polished rice
摘 要：
This study investigated the differences of 20 rice genotypes (10 maintainers and 10 restorers) selected in Sichuan in their capability in uptake of the added Pb and Cd from soil and in their distribution between the straw and the seed in a pot trial. Results showed that under the pollution of Pb or Cd, there were remarkable differences among different genotypes. The Y11 appeared highest resistance to uptake of Pb without any Pb detected in the seed-least transferable material for Pb from the straw to the seed and the Y16 was highly resistant to uptake of Cd with only 0.15 mg·kg-1, producing high quality rice superior to the Pollution-Free Standard for Rice (NY5115-2002) in China. The most vulnerable materials to Pb pollution were Y07 and Y17 and those to Cd were Y07, Y05 and Y17. All the rice materials tended to accumulate more Cd than Pb. The restorer lines showed higher resistance to uptake of Pb or Cd than the maintainer lines.
