摘要
以栀子花幼苗为研究对象,在不同浓度Pb、P处理下进行土壤盆栽试验,分析栀子花幼苗根、茎、叶中生物量的变化及其P含量的不同,探讨Pb、P胁迫下栀子花对P的吸收积累特性。结果表明,在该试验条件下,重金属Pb对栀子花幼苗的生长表现出"抑制"现象,P对栀子花幼苗的生长表现出"低促高抑"现象;低浓度(≤651.64 mg/kg)P污染下,施Pb不影响栀子花幼苗对P的吸收,高浓度(≥1 251.64 mg/kg)P污染下,施Pb降低了栀子花幼苗对P的吸收能力,并且对根、茎的影响大于叶;栀子花幼苗体内的P主要储存在根中,茎和叶中储存的相对较少。
The effects of Pb and P compound stress on the biomass and P concentration of Gardenia jasminoides was analyzed in detail in this paper. The results showed that the growth was inhibited significantly under Pb stress, but the growth was promoted under low P stress and was inhibited under high P stress. Pb have no effect on P uptake and accumulation characteristics of Gardenia jasminoides under the low P （≤651.64 mg/kg） stress, however Pb reduce the P uptake of Gardeniajasminoides under the high P （1 251.64 mg/kg） stress. The effect on the root and stem was greater than the leaf. Most of the P was stored in the root of Gardenia jasminoides.
出处
《广东农业科学》
CAS
CSCD
北大核心
2013年第2期50-53,共4页
Guangdong Agricultural Sciences
基金
国家"十二五"水专项(2012ZX07104-002-04)
湖北省高等学校优秀中青年科技创新团队计划项目(T200703)
关键词
PB
P
栀子花
吸收
Pb
P
Gardeniajasminoides
uptake
