声明
论文说明
Dedication
Acknowledgements
Contents
List of Abbreviations
Abstract
摘要
1 General Introduction
1.1 Origin of cotton cultivation
1.2 Cotton growth cycle
1.3 Types of commercially cultivated cotton
1.4 World production of cotton
1.5 Uses of cotton
1.6 Cottonseed germplasm resources and variation
1.7 Progress in cottonseed breeding
1.8 The application of NIR spectroscopy to plant breeding
1.9 Objectives of the present study
2 Literature Review
2.1 Characteristics of seed quality Traits
2.2 Seed quality traits and inheritance in oilseed plants
2.3 Oil quality
2.4 Fatty acids
2.4.1 Classification of fatty acids
2.4.2 Fatty acids in cottonseed
2.4.3 The fatty acid biosynthetic pathway
2.4.4 The pathway to oil accumulation in seed
2.4.5 Nutritional and health implications of fatty acids
2.5 Chemical analysis of oil and fatty acid contents
2.6 Near infrared reflectance spectroscopy (NIRS) and its application
2.6.1 The origin and characteristics of NIRS
2.6.2 The theoretical basis of NIRS quantitative analysis
2.6.3 Using NIRS for measurement
2.6.4 NIRS instrumentation:spectrophotometers
2.6.5 Data analysis and calibration development
2.6.6 Population definition
2.6.7 Qualitative analysis
2.6.8 Development of a calibration model
2.6.9 Model Validation
2.6.10 Establishment of the workflow of NIR spectroscopy measurement and calibration
2.6.11 Advantages and limitations of NIR spectroscopy
2.6.12 Features of NIRS application to agricultural products
2.7 Genetics of cottonseed quality traits
2.7.1 Gene expression for quality traits in cottonseed
2.7.2 Genetic variability in cottonseed
2.7.3 Cotton fatty acid content and nutrition quality
2.7.4 Construction of genetic map
3 Materials and Methods
3.1 Experiment materials
3.2 Field experiments
3.3 Analysis of oil and fatty acid contents of samples
3.3.1 Sample preparation
3.3.2 Reference methods
3.3.3 NIRS determination of oil and fatty acid contents in cottonseed kernel
3.4 Linkage map for QTL mapping
3.5 Data analysis and QTL mapping software
3.6 Characteristics of upland cotton interspecific RIL linkage map
3.7 Likelihood analysis
3.8 Hypothesis Tests/permutation tests
3.9 Parameter Setting
3.10 QTL mapping data
3.11 QTL mapping
3.11.1 Mixed linear model-based composite interval mapping
4 Results
4.1 NIRS analysis of oil and fatty acid content in cottonseed
4.1.1 Variability for oil content and fatty acid composition
4.1.2 Selection of spectral pre-treatment method
4.1.3 Calibration
4.1.4 External validation
4.2 Analysis of QTL related to oil and fatty acid content in cottonseed kernel
4.2.1 Phenotypic analysis of oil content in the parents and IF2 populations
4.2.2 QTL analysis for oil and fatty acid contents
4.2.3 Genetic effects on QTL controlling cottonseed oil content
4.2.4 Genetic systems controlling fatty acids in cotton seed kernel
5 Discussions
5.1 Variability for oil content and fatty acid composition
5.2 NIRS analysis of samples
5.3 Analysis of QTL related to oil and fatty acid content in cottonseed kernel
5.3.1 Effects of genetic systems controlling oil and fatty acid contents in cottonseed
6 Conclusion and future recommendations
Refefences
8 List of publications