摘要
采用营养液培养-同位素示踪法研究了镉(Cd2+浓度为10μmol.L-1和50μmol.L-1)对油菜幼苗(秦油9号)硫吸收、转运和分布的影响.结果表明,镉处理促进了油菜植株对硫的吸收.10μmol.L-1镉处理96 h油菜植株比对照组吸收的硫增加了36%,而且促进了硫向地上部的转运,有39.4%的硫被转运到植株的地上部,转运速率较对照组增加了50%.相同时间内,50μmol.L-1镉处理的油菜植株中的硫仅比对照组多3%,转运速率显著下降,但仍有25.9%的硫被转运至地上部.
The absorption, transmission and distribution of sulfur in rape seedlings （Qinyou No. 9 ） under two different levels of Cd2＋ （10 and 50 μmol·L-） were investigated by a hydroponic-isotope trace experiment. The results showed that Cd2~ treatments enhanced the absorption of sulfur in rape plants. As compared with control, the adsorption of sulfur increased by 36% at a level of 10 μmol·L- Cd2 ＋for 96 h, and about 39.4% of sulfur was transported to plant aboveground and the transmission rate increased by 50%. With 50 μmol·L-Cd2＋, the absorption of sulfur by plants only increased by 3 %, and the transmission rate obviously decreased. However, there was still approximately 25.9% of the sulfur was transported to plant aboveground.
出处
《环境化学》
CAS
CSCD
北大核心
2013年第1期139-143,共5页
Environmental Chemistry
基金
中央高校基本科研业务费专项资金(KYZ201124)资助
关键词
镉
油菜幼苗
吸收
转运
硫
分布
cadmium, rape seedlings, uptake, transport, sulfur, distribution.
