外源Pb对不同水稻品种籽粒中Pb含量的基因型差异研究

Effect of Exogenous Lead on Genotypic Difference of Lead Content in Grains of Different Rice Varieties

采用田间小区试验方法,选用福建省大面积推广应用的7个水稻品种为试材,在外施PbCl2不同处理条件下,研究了不同基因型的水稻稻米对重金属元素Pb的吸收累积差异。结果表明,在不同浓度的Pb处理下,水稻糙米中Pb含量在品种间存在显著差异,而且不同水稻品种的籽粒对土壤中重金属Pb的敏感性不同,以此可找出适合污染地区种植的品种。

With seven rice cultivars as materials which were popularized and applied in a large area in Fujian, the differences of absorption and accumulation of heavy metal lead（ Pb ） in grains of different rice genotypes were studied by different application of exogenous PbC12. The results showed that the content of Pb in grains showed significant differences between the rice cuhivars at different Ph concentration treatment. Furthermore, the sensitivity of grains of different rice varieties to heavy metal Pb in soils was different. Then, the rice varieties which were suitable for cultivation in polluted areas could be identified.