声明
1 Introduction
1.1Introduction of Cadmium
1.2Introduction of Phytoremediation
1.3Advantages of Phytoremediation
1.4Cadmium effect on plants
1.5Introduction of poplar tree
1.6Response of poplar to Cd stress
1.7 Objectives
2Material and Methods
2.1Plants material and Experimentaldesign
2.2Growth measurements and biomass measurements
2.3Gas exchange and Chlorophyll pigments measurements
2.4POD and SOD activity determination
2.5Transmission electron microscopy observations
2.6Determination of Cd contents in leaves, stem and roots
2.7Calculation of phytoremediation-related parameters
2.7.1 Translocation factor
2.7.2Tolerance index
2.7.3Bioconcentration factor
2.8Statistical analyses
3 Results
3.1Growth and biomass accumulation
3.2Gaseous exchange and chlorophyll pigments
3.3SOD and POD activity
3.4Ultracellular structure of plant leaf
3.5Differences in Cd uptake and translocation
4 Discussion
4.1Plants growth, photosynthesis and cadmium induced oxidative stress
4.2Cadmium uptake, translocation and accumulation
5Conclusion and further research
致谢
参考文献
西南科技大学;