农业资源与环境学报2017，Vol.34Issue(5)：466-472,7.DOI:10.13254/j.jare.2017.0147
含Pb、Cd细颗粒物暴露对水稻、马铃薯早期生长的影响
Effects of Exposion to Fine Particles of Pb and Cd on Early Growth of Rice and Potatoes
摘要
Abstract
Heavy metal-containing particles in the atmosphere have negative impacts on the seedling growth and early stage growth of terrestrial plants. Exposure scenarios were established to simulate the ambient conditions with different pollution levels of airborne heavy metals. Under these scenarios, hazardous impacts of fine particles containing lead (Pb) and cadmium (Cd) on the emergence, seedling growth, and fresh weight(including both above ground stem leaf of rice and underground stem tuber of potato)were evaluated. The results showed that, for exposure treatment groups, the concentrations of Pb and Cd in the artificial soil increased at the end of the test. Compared with the background value in soil, the Cd level elevated about 8.8 times while no significant increase was observed for Pb concentration. The accumulation values of Pb and Cd were 0.0020, 0.054 mg·kg-1 in the stem leaf of rice and 0.1850, 0.074 mg·kg-1 in the stem tuber of potato. The exposure had no significant inhibition effect on all the biomass endpoints of rice, but had an inhibition rate of 27％ on the fresh weight of potato underground stem tuber. Thus, under the simulation exposure, larger impact was projected to the Cd concentration in the artificial soil, and the Cd accumulative effect was more obvious in the underground stem tuber of potatoes. Compared with the control groups, the combined pollution of Pb and Cd in the exposure treatment groups indicated remarkable inhibition and stress effects. Moreover, aboveground stem leaf of rice showed better adaption and low sensitivity when exposed to pollutants at certain concentrations.关键词
细颗粒物/暴露/重金属/生物量/毒性危害Key words
fine particles/exposure/heavy metals/biomass/toxic hazard分类
资源环境引用本文复制引用
杨帆,杨和行,王樱芝,刘亚楠,杨希晨..含Pb、Cd细颗粒物暴露对水稻、马铃薯早期生长的影响[J].农业资源与环境学报,2017,34(5):466-472,7.基金项目
上海市自然科学基金(15ZR1435200) （15ZR1435200）
