摘要
以砷化物为污染源，研究砷对大豆种子萌发及生理活性物质的影响，结果表明：砷化镓（ＧａＡｓ）和砷酸钠（Ｎａ＿３ＡｓＯ＿３三价砷和Ｎａ＿２ＨＡｓＯ＿４五价砷）对大豆种子萌发的影响，在五价砷（ＧａＡｓ和Ｎａ＿２ＨＡｓＯ＿４）１－５ｍｇ／Ｌ，三价砷０．１－１ｍｇ／Ｌ对大豆萌发有促进作用，随着浓度提高，发芽率有所下降；五价砷５０ｍｇ／Ｌ和三价砷１０ｍｇ／Ｌ显著受抑制；五价砷５００ｍｇ／Ｌ和三价砷１００ｍｇ／Ｌ种子萌发完全受抑制，砷化镓与五价砷相类同，砷对异柠檬酸裂解酶（ＩＣＬ）和超氧物岐化酶（ＳＯＤ）活性的影响与发芽能力呈正相关，三价砷对ＩＣＬ和ＳＯＤ的致钝作用大于五价砷２．５倍，五价砷Ｎａ＿２ＨＡｓＯ＿４大于ＧａＡｓ。
AbstractThe germination of soybean seed was affected evidently by GaAs,Na2HA sO4 (As(V) and Na3AsO3 As(V) 1-5mg/kg of As(V)or 0.1-1mg/kgof As(Ⅲ)stimulated the germination of soybean seed and more than 50mg/kg of As(V)or 10 mg/kg of As( Ⅲ )inhibited the germination Thegermination of soybean seeds was entirely inhibited by 500mg/kgof As(V)or 100 mg/kg of As(Ⅲ).GaAs behaved similarly as As (V).The activit-ies of ICL, and SOD had close relations with the soybean germination abil-ity when affected by arsenic compound.The inactivation of ICL and SODby As(Ⅲ) was from 2 to 5 times stronger than As(V).
出处
《农业环境保护》
CSCD
1994年第5期194-198,240,共6页
Agro-Environmental Protection
基金
国家自然科学基金
