摘要
采用土壤盆栽试验研究了16个不同品种大豆对As吸收、积累和分配的影响。结果表明,在As污染条件下,不同品种大豆的根、茎、叶、豆荚、豆粒和总生物量差异较大。16个品种中,总生物量在2.82～5.28g之间,其中吉育63总生物量最大,而吉育67生物量最小,仅为前者的50%左右;豆粒生物量在0.71～1.68g之间。大豆植株各部分的As含量大小顺序为根>茎>叶>豆粒。不同品种中As含量范围为根3933.47～9480.23!g.kg-1,茎637.26～2080.39!g.kg-1,叶392.90～1366.09!g.kg-1,豆粒16.57～138.99!g.kg-1。As从根向茎、叶和豆粒中的迁移情况随品种不同而异,其迁移系数分别为0.107～0.371、0.067～0.250和0.004～0.018。不同大豆品种对As吸收和积累的差异提示人们可以通过品种筛选工作来达到降低As对人体健康危害的目的。
Uptake and accumulation of arsenic by 16 soybean genotypes （Glycine max （L.） Merr.） cultured in an uncontaminated soil were studied in greenhouse experiment. Volume of 30 mL arsenic-containing solution （0.8 mg· L^-1） was used to water soybean plants 3 times each week. The results showed that there were significant differences in root, stem, leaf, bean-pod, grain and total biomass among different soybean genotypes. The range of total biomass for 16 soybean plants was 2.82-5.28 g, while the biomass of bean was 0.71-1.68 g. The order of As concentration in soybean varieties was root〉stem〉leaf〉grain. The concentrations of As in 16 soybean varieties were 3 933.47-9 480.23μg·kg^-1 in root, 637.26-2 080.39 μg·kg^-1 in stem, 392.90- 1 366.09 μg·kg^-1 in leaf, 16.57- 138.99 μg·kg^-1 in grain. Root-to-stem transfer factors of As in 16 soybean varieties were 0.107-0.371, while root-to-leaf and root-to-grain transfer factors for As were 0.067-0.250 and 0.004-0.018, respectively.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2006年第6期1397-1401,共5页
Journal of Agro-Environment Science
基金
科学院知识创新工程重大项目(KZCX1-SW-19)
国家自然科学基金杰出青年基金项目(40225002)
关键词
大豆
砷
土壤
吸收
积累
soybean
arsenic
soil
uptake
accumulation
