| Acknowledgements | 第9-11页 |
| Abstract | 第11页 |
| List of tables | 第17-19页 |
| List of figures | 第19-20页 |
| Chapter Ⅰ Literature Review | 第20-37页 |
| 1.1 Biological mechanisms involved in Cd movement, accumulation, and detoxification in plants | 第20-23页 |
| 1.1.1 Cd movement and accumulation in plants | 第20-22页 |
| 1.1.2 Cd detoxification and strategy of Cd tolerance in plants | 第22-23页 |
| 1.2 Effect of Cd stress on plant physiology and morphology | 第23-29页 |
| 1.2.1 Effect of Cd stress on plant growth | 第24-25页 |
| 1.2.2 Effect of Cd on chlorophyll content and photosynthetic rate | 第25-27页 |
| 1.2.3 Changes in dark respiration | 第27-28页 |
| 1.2.4 Cadmium toxicity and oxidative stress | 第28-29页 |
| 1.3 Strategies to alleviate Cd toxicity and its accumulation in crops | 第29-37页 |
| 1.3.1 Effect of Zn on Cd toxicity | 第29-32页 |
| 1.3.2 Role of S in alleviation of Cd toxicity | 第32-33页 |
| 1.3.3 Effect of N form on Cd uptake and accumulation | 第33-34页 |
| 1.3.4 Genotypic difference in response to Cd stress in rice | 第34-37页 |
| Chapter Ⅱ Influence of Cadmium Toxicity on Antioxidant Enzyme Activities, plant growth and Cd accumulation in rice | 第37-52页 |
| 2 Materials and methods | 第38-52页 |
| 2.1 Culture condition and Cd treatment | 第38-40页 |
| 2.1.2 Measurement | 第39-40页 |
| 2.2 Result and analysis | 第40-47页 |
| 2.2.1 Plant height, SPAD values and photosynthetic rate | 第40-42页 |
| 2.2.2 Effect of Cd on plant biomass and Cd concentration | 第42-44页 |
| 2.2.3 Effect of Cd on MDA | 第44-45页 |
| 2.2.4 Effect of Cd on antioxidant enzymes | 第45-47页 |
| 2.3 Discussion | 第47-52页 |
| Chapter Ⅲ Zinc Alleviates Growth Inhibition and Oxidative Stress Caused by Cadmium Toxicity in Rice | 第52-66页 |
| 3 Materials and methods | 第53-66页 |
| 3.1 Culture condition and Cd treatment | 第53-54页 |
| 3.1.2 Sampling and enzymatic analysis | 第54页 |
| 3.2 Result and analysis | 第54-62页 |
| 3.2.1 Plant height and biomass | 第54-57页 |
| 3.2.2 Chlorophyll content and photosynthetic rate | 第57-58页 |
| 3.2.3 Cd concentrations in roots and shoots | 第58-59页 |
| 3.2.4 MDA content | 第59-60页 |
| 3.2.5 SOD and POD activities | 第60-62页 |
| 3.3 Discussion | 第62-66页 |
| Chapter Ⅳ Sulfur Alleviates Growth Inhibition and Oxidative Stress Caused by Cadmium Toxicity in Rice | 第66-82页 |
| 4 Materials and methods | 第67-82页 |
| 4.1 Culture condition and treatment | 第67-69页 |
| 4.1.2 Sampling and measurement | 第68-69页 |
| 4.1.3 Statistical analysis | 第69页 |
| 4.2 Results and analysis | 第69-78页 |
| 4.2.1 Plant height and biomass | 第69-70页 |
| 4.2.2 Chlorophyll content and photosynthetic rate | 第70-71页 |
| 4.2.3 Nutrient concentration | 第71-72页 |
| 4.2.4 Cd and S Concentrations | 第72-73页 |
| 4.2.5 MDA content | 第73-75页 |
| 4.2.6 Glutathione content | 第75-77页 |
| 4.2.7 SOD activity | 第77-78页 |
| 4.3 Discussion | 第78-82页 |
| Chapter Ⅴ The influence of N forms on growth and some enzymatic activities of rice plants exposed to Cadmium stress | 第82-92页 |
| 5 Materials and methods | 第83-92页 |
| 5.1.1 Culture condition and treatments | 第83-84页 |
| 5.1.2 Sampling and measurement | 第84-85页 |
| 5.1.3 Statistical analysis | 第85页 |
| 5.2 Results and analysis | 第85-89页 |
| 5.2.1 Plant height, leaf and tiller number per plant | 第85页 |
| 5.2.2 Photosynthetic rate, chlorophyll content and biomass accumulation | 第85-87页 |
| 5.2.3 SOD activity | 第87页 |
| 5.2.4 MDA content | 第87页 |
| 5.2.5 N and Cd concentrations in roots and shoots | 第87-89页 |
| 5.3 Discussion | 第89-92页 |
| Literature cited | 第92-115页 |
