Cotton (Gossypium spp.) is an important cash crop. It is not only the important source of natural fiber for the world's textile industry, but also an important source of edible oil. Narrow genetic base has become a main problem for genetic improvement of Gossypium hirsutum L. Molecular genetic map provides a firm framework not only for gene loci tagging, marker-assisted selection to reduce linkage drag and map-based cloning of important genes, but also for investigation of genomic structure and evol...