Abstract:

Cytoplasmic male sterility (CMS) system of cotton promises encouraging prospects in achieving the mass production of hybrid seed and breeding new cotton hybrids with high yield, fine fiber, and adversity resistance, while the restorer line plays an important role in utilizing CMS system, therefore, it is essential for developing of elite fertility restorer. This paper firstly reviews the types of cytoplasmic male sterile lines and restoring lines of cotton; the research progress of inheritance pattern of fertility restoration and the mapping of fertility restoring genes. Then it discusses the prospects of fine mapping and marker identification of fertility restorer genes for marker-assisted selection in molecular breeding of hybrids. At last, this paper lists some strategies and methods to solve problems in current marker-assisted selection in cotton.