Mapping QTLs for Lint Percentage and Seed Index by Using Gossypium barbadense Chromosome Segment Introgression Lines Heterosis and Gene Action of Boll Weight and Lint Percentage in High Quality Fiber Property Varieties in Upland Cotton Constructing a high-density linkage map for Gossypium hirsutum × Gossypium barbadense and identifying QTLs for lint percentage Quantitative Inheritance of Yield and Its Components in Upland Cotton(Gossypium hirsutum L.)Cultivars with Varied Lint Percentages