关键词: 水稻 重金属 污染 基因型差异 育种

Abstract:

Heavy metal pollution in soil-rice system not only inhibits the growth and development of crops, but also poses a great threat to human health via food chain. The source and characteristics of heavy metal pollution in soil-rice system were reviewed in this article. The toxicity to both plants and human health posed by heavy metals was also analyzed. Finally, some approaches and strategies were proposed for alleviating heavy metal pollution in soil-rice system. It was proposed that there is a significant difference among rice genotypes in heavy metal uptake and accumulation in grains, thus providing a possibility of developing rice cultivars with low grain accumulation of toxic heavy metals, which is consider as a most efficient approach of producing safe rice in slightly or moderately contaminated soils.

Key words: rice （Oryza sativa L.）, heavy metal, contamination, genotypic difference, breeding