ecotype;
cadmium;
accumulate;
water demand;
THLASPI-CAERULESCENS;
TOLERANCE;
LOCALIZATION;
MECHANISMS;
D O I:
暂无
中图分类号:
R318 [生物医学工程];
学科分类号:
0831 ;
摘要:
Cadium accumulation characteristics in six Composite species of different ecotypes were investigated through hydroponics experiment. Cd-absorption ability and Cd-accumulation efficiency in shoots showed similar trend to that of water usability, that is, mesophyte >xerophyte >psammophyte >halophyte. Younger leaves exhibited higher Cd concentration than older leaves in all the species except Artemisia intramongolia during the 1-6 d periods. The following conclusion was draw through comparative analysis of water and nutrient usability of the six species: differences of Cd accumulation ability were mainly decided by inherent hereditary property of water and nutrient usability.
机构:
US EPA, Off Res & Dev, Natl Ctr Environm Res 8722R, Washington, DC 20460 USAUS EPA, Off Res & Dev, Natl Ctr Environm Res 8722R, Washington, DC 20460 USA
机构:
US EPA, Off Res & Dev, Natl Ctr Environm Res 8722R, Washington, DC 20460 USAUS EPA, Off Res & Dev, Natl Ctr Environm Res 8722R, Washington, DC 20460 USA