声明
摘要
ABSTRACT
CONTENTS
CHAPTER 1 INTRoDUCTION,LITERTURE REVIEWAND OBJECTIVES
2.LITERTURE REVIEW
2.1.History of soybean introduction and cultivation in SSA
2.2.Current status of soybean production in SSA
2.3.Soybean utilization in SSA
2.4.Soybean research in SSA
2.5.Potential of the soybean industry in SSA
2.6.Soybean maturity group classification
3.OBJECTIVES
CHAPTER 2 MATEIUALS AND METHODS
2.1.International Soybean Variety Experiment(ISVEX)
2.2.Plant materials
2.3.Experimental descriptions and phenotypicdata collection
2.3.1.Beijing pot experiment
2.3.2.Yunnan field experiment
2.3.3.Hainan field experiment
2.4.DNA extraction
2.5.Polymerase chain reaction(PCR)
2.6.Cloning and sequencing of E1,E2,E3,E4 and J genes
2.7.Statistical analysis
CHAPTER 3 RESULTS
3.1.Phenotypic variabiltiy
3.2.Relative maturity groups(RNG)identification
3.3.Allelic variation at E1,E2,E3 and E4 maturity loci
3.4.J haplotypes
CHAPTER 4 DISCUSSION
4.1.Maturity group classification of African soybean germplasm
4.2.Allelie combinations of E1,E2,E3 and E4loci and their relationships to maturity grouping
4.3.J gene variation
4.4.Comparison of selected high-yielding varieties with maturity groups and allelic combination of flowering and maturity genes
CONCLUSIONS
REFERNCES
Appendix
RESUME
ACKNOWLEDGEMENTS