| 摘要 | 第6-8页 |
| ABSTRACT | 第8-9页 |
| CHAPTER 1 INTRODUCTION | 第19-38页 |
| 1.1 Background | 第19-21页 |
| 1.2 The genus Oryza sativa L | 第21页 |
| 1.3 Economic and nutritional importance | 第21-22页 |
| 1.4 Rice production and milling quality | 第22-23页 |
| 1.5 Rice milling quality | 第23-24页 |
| 1.6 Rice grain appearance | 第24页 |
| 1.7 Factors that affect milling quality of rice | 第24-26页 |
| 1.8 Past achievements in rice breeding | 第26-27页 |
| 1.9 Molecular breeding progress | 第27-28页 |
| 1.10 Genetic mapping | 第28-30页 |
| 1.10.1 Linkage analysis | 第29页 |
| 1.10.2 Quantitative trait loci mapping for rice milling quality | 第29-30页 |
| 1.10.3 Quantitative trait loci mapping for rice grain shape | 第30页 |
| 1.11 Application of biotechnology in rice quality improvement | 第30-34页 |
| 1.11.1 Marker assisted breeding for rice quality improvement | 第31-32页 |
| 1.11.2 Genetic engineering | 第32-34页 |
| 1.11.2.1 Genetic transformation | 第32-33页 |
| 1.11.2.2 Genome editing | 第33-34页 |
| 1.12 Future trends of rice quality improvement | 第34页 |
| 1.13 Past research limitations | 第34页 |
| 1.14 Aim of the study | 第34-35页 |
| 1.15 Scope and outline of the thesis | 第35-38页 |
| CHAPTER 2 GENETIC VARIABILITY, HERITABILITY AND CORRELATION STUDIES OF MILLING QUALITY, GRAIN DIMENSION AND AGRONOMIC TRAITS IN INTROGRESSION LINES DERIVED FROM AN INTERSPECIFIC (INDICA X JAPONICA) CROSS OF RICE. | 第38-58页 |
| 2.1 Introduction | 第38-39页 |
| 2.2 Materials and methods | 第39-43页 |
| 2.2.1 Materials | 第39-40页 |
| 2.2.2 Methods | 第40页 |
| 2.2.3 Trait measurements | 第40-42页 |
| 2.2.4 Data analysis | 第42-43页 |
| 2.3 Results | 第43-52页 |
| 2.3.1 Phenotypic variability assessment | 第43-44页 |
| 2.3.2 Phenotypic variance components | 第44页 |
| 2.3.3 Trait mean performance of introgression lines and parents | 第44-47页 |
| 2.3.4 Heritability | 第47-48页 |
| 2.3.5 Pearson’s correlation analysis | 第48-49页 |
| 2.3.6 Path analysis for head rice recovery | 第49-51页 |
| 2.3.7 Path analysis for grain yield | 第51-52页 |
| 2.4 Discussion | 第52-57页 |
| 2.4.1 High genetic variability among genotypes | 第52-53页 |
| 2.4.2 Genotype x Environment Interactions | 第53页 |
| 2.4.3 Inferences from trait mean performance of introgression lines and parents | 第53-54页 |
| 2.4.4 Inferences from variation of heritability among traits | 第54-55页 |
| 2.4.5 Inferences from trait correlations | 第55-56页 |
| 2.4.6 Effect of various traits on head rice recovery | 第56-57页 |
| 2.4.7 Effect of various traits on grain yield | 第57页 |
| 2.5 Conclusion | 第57-58页 |
| CHAPTER 3 MAPPING QUANTITATIVE TRAIT LOCI FOR MILLING QUALITY AND GRAIN DIMENSION TRAITS OF A SET OF INTROGRESSION LINES DERIVED FROM AN INTERSPECIFIC CROSS (indica x japonica) OF RICE | 第58-72页 |
| 3.1 Introduction | 第58-59页 |
| 3.2 Materials and methods | 第59-60页 |
| 3.2.1 Materials | 第59页 |
| 3.2.2 Methods | 第59页 |
| 3.2.3 Genotyping | 第59-60页 |
| 3.2.4 QTL analysis | 第60页 |
| 3.3 Results | 第60-66页 |
| 3.3.1 QTL detection for milling quality traits | 第60-61页 |
| 3.3.2 QTL detection for grain dimension traits | 第61-62页 |
| 3.3.3 Stably expressed QTL for quality related traits | 第62页 |
| 3.3.4 QTL clusters for quality related traits | 第62-66页 |
| 3.4 Discussion | 第66-71页 |
| 3.4.1 Contributions of QTL main effects of milling quality traits | 第66-67页 |
| 3.4.2 Contributions of QTL main effects of grain dimension traits | 第67-69页 |
| 3.4.3 Stably expressed QTL for quality related traits | 第69页 |
| 3.4.4 Genetic interactions among quality traits | 第69-71页 |
| 3.5 Conclusion | 第71-72页 |
| CHAPTER 4 GENETIC BACKGROUND EFFECTS ON QUANTITATIVE TRAIT LOCI MAPPING OF AGRONOMIC TRAITS USING MULTIPLE POPULATIONS IN FOUR ENVIRONMENTS | 第72-97页 |
| 4.1 Introduction | 第72-73页 |
| 4.2 Materials and methods | 第73-74页 |
| 4.2.1 Materials | 第73页 |
| 4.2.2 Experimental sites | 第73页 |
| 4.2.3 Methods | 第73-74页 |
| 4.2.4 Data analysis | 第74页 |
| 4.2.5 QTL analysis | 第74页 |
| 4.3 Results | 第74-88页 |
| 4.3.1 Trait variability assessment | 第74-75页 |
| 4.3.2 Trait mean performance and heritability | 第75-78页 |
| 4.3.3 Pearson’s correlation and path analysis | 第78-80页 |
| 4.3.4 QTL mapping of agronomic traits across populations | 第80-85页 |
| 4.3.5 QTL clusters | 第85-88页 |
| 4.4 Discussion | 第88-95页 |
| 4.4.1 High genetic variability among genotypes across populations | 第88-89页 |
| 4.4.2 Heritability inferences from various populations | 第89页 |
| 4.4.3 Inferences from trait correlations | 第89-90页 |
| 4.4.4 Contributions of QTL main effect of agronomic traits | 第90-93页 |
| 4.4.5 Genetic interactions between DTH and milling quality traits | 第93-94页 |
| 4.4.6 Genetic interactions between milling quality and other traits | 第94页 |
| 4.4.7 Genetic association between traitsprobably caused by QTL clusters | 第94-95页 |
| 4.4.8 Overall novel QTL of the study | 第95页 |
| 4.5 Conclusion | 第95-97页 |
| CHAPTER 5 | 第97-99页 |
| 5.1 SUMMARY AND CONCLUSIONS | 第97-99页 |
| REFERENCES | 第99-116页 |
| APPENDICES | 第116-120页 |
| ACKNOWLEDGEMENT | 第120-121页 |
| RESUME | 第121页 |
