关键词: 矮败小麦；矮秆；雄性不育；育种技术

Abstract:

Dwarf malesterile (DS) wheat carries Ms2, the Taigu malesterile gene, and RhtD1c dwarfing gene, a genetic marker for the male sterility and the two genes are closely linked on the short arm of chromosome 4D. The progeny of DS wheat always segregates in 1∶1 for malesterile plants with RhtD1c and malefertile plants without RhtD1c, so it provides an ideal tool for wheat recurrent selection breeding program. Using DS wheat, a convenient and effective method has been established in recurrent selection called DS wheat breeding system. The DS wheat breeding system has been successfully used in wheat breeding programs in China. The great progress in molecular biology in recent years make it possible to further improve DS wheat breeding system, and vice versa, the DS wheat breeding system can serve as a high efficient platform for the molecular breeding technology to be used in wheat breeding program, and the combination of the DS wheat breeding system with the molecular breeding technology may significantly increase the wheat breeding efficiency. This paper reviewed the progress in DS wheat breeding system and discussed its future development.

Key words: dwarf malesterile wheat, dwarf, malesterile, breeding technology