| ABSTRACT | 第6-8页 |
| List of Abbreviations | 第9-10页 |
| CHAPTER 1 LITERATURE REVIEW | 第10-20页 |
| 1.1 Global Rice Production and Market Impact | 第10-11页 |
| 1.2 Global Trade and Policies of Rice | 第11-12页 |
| 1.3 China's Rice Market | 第12-13页 |
| 1.4 Physical Qualities of Rice Cultivars and Regional Distribution Preference | 第13-15页 |
| 1.5 Genetic Research of Elite Alleles Mining | 第15-16页 |
| 1.6 Models and Principles of Association Analysis | 第16-17页 |
| 1.7 Methods of Association Analysis | 第17-19页 |
| 1.8 Objectives of the Study | 第19-20页 |
| CHAPTER 2 MATERIALS AND METHODS | 第20-26页 |
| 2.1 Plant Materials | 第20页 |
| 2.2 Field Planting and Trait Investigation Methods | 第20页 |
| 2.3 DNA extraction and PCR amplification | 第20-22页 |
| 2.4 Data Analysis | 第22-23页 |
| 2.5 Measure of Linkage Disequilibrium | 第23页 |
| 2.6 Population Structure | 第23-24页 |
| 2.7 Identifying Molecular Markers Associated with Traits | 第24页 |
| 2.8 Identifying Elite Alleles Associated with Traits | 第24-25页 |
| 2.9 Design of Novel Parental Combinations | 第25-26页 |
| CHAPTER 3 RESULTS AND ANALYSIS | 第26-84页 |
| 3.1 Descriptive Statistics And Heritability of Grain Sizes and Weight within the Population | 第26-27页 |
| 3.1.1 Phenotypic evaluations | 第26-27页 |
| 3.2 Frequency Distribution of GL, GW, GT, GL/GW and TGW across the 2 Years | 第27-29页 |
| 3.3 Phenotypic Correlations among Traits | 第29页 |
| 3.4 Molecular Markers Diversity | 第29-35页 |
| 3.5 Population Structure | 第35-37页 |
| 3.6 Genetic Diversity and PIC for the Subpopulations | 第37页 |
| 3.7 Linkage Disequilibrium | 第37-40页 |
| 3.8 Association Mapping of SSR Loci with 5 seed grain Components Traits | 第40页 |
| 3.9 SSR Loci Associated with Grain Length | 第40-42页 |
| 3.10 Positive and Top-three Negative Effects of Elite Alleles of SSR Markers | 第42-44页 |
| 3.11 Allelic Variation For Grain Length Accumulated in the Topmost 30 Varieties and Lowest 30 Varieties | 第44-55页 |
| 3.12 SSR Loci Associated with Grain Width | 第55页 |
| 3.13 Positive and Top-three Negative Effects of Elite Alleles of SSR Markers | 第55-56页 |
| 3.14 Allelic Variation For Grain Width Accumulated in the Topmost 30 Varieties and Lowest 30 Varieties | 第56-59页 |
| 3.15 SSR Loci Associated with Grain Thickness | 第59-60页 |
| 3.16 Positive and Top-three Negative Effects of Elite Alleles of SSR Markers | 第60-61页 |
| 3.17 Allelic variation for grain thickness accumulated in the topmost 30 varieties and lowest 30 varieties | 第61-69页 |
| 3.18 SSR Loci Associated with Grain Length to Width Ratio | 第69-70页 |
| 3.19 Positive and Top-three Negative Effects of Elite Alleles of SSR Markers | 第70-71页 |
| 3.20 Allelic Variation For Grain Length to Width Ratio Accumulated in the Topmost 30 Varieties and Lowest 30 Varieties | 第71-77页 |
| 3.21 SSR Loci Associated with One Thousand Grain Weight | 第77页 |
| 3.22 Positive and Negative Effects of Elite Alleles of SSR Markers | 第77-78页 |
| 3.23 Allelic Variation For One Thousand Grain Weight Accumulated in the Topmost Varieties and Lowest 30 Varieties | 第78-81页 |
| 3.24 Improvement of Grain Size Component Traits and Weight in Cross Breeding of Parent Selection | 第81-84页 |
| 3.24.1 Design for novel parental combination | 第81-84页 |
| CHAPTER 4 DISCUSSION AND CONCLUSIONS | 第84-88页 |
| 4.1 Discussion | 第84-87页 |
| 4.2 Conclusions | 第87-88页 |
| References | 第88-94页 |
| PUBLICATIONS | 第94-96页 |
| Appendix A: Name, Code of accessions used in this study | 第96-112页 |
| Acknowledgement | 第112页 |
