关键词: 矮秆 , 雄性不育 , 矮败小麦 , 育种技术

Abstract: Dwarf Male-Sterile Wheat (DS wheat) is a genetic material called AiBai which linked Ms2, the Taigu genic male-sterile gene, with Rht10 dwarfing gene tightly on the same chromosome 4DS with 0.18 crossing-over unit. This provides a genetic marker for male sterility. The progeny of DS wheat always segregates into 1:1 for male-sterile plants with dwarfing gene Rht10 and male-fertile plants without dwarfing gene Rht10.So the male-sterile plants are shorter than the male-fertile plants, it is easy to identify male sterility plants based on the plants height. Dwarf male-sterile wheat is a favorable tool for wheat breeding in recurrent selection. Using dwarf male-sterile wheat, we have created a simple, effective and practical method and technology in recurrent selection called DS wheat breeding system. The new DS technical system consists of construction of basic population, choice of male parent, selection of male-sterile plant and intercrossing. For more than a decade, now the characteristics of improved population, such as yield, quality, resistance and plant-type have been increased more rapidly. New cultivar RS987 and a series of new lines have been released in recent year. Dwarf male-sterile wheat and its breeding technical system is an effective technology platform for wheat breeding in different ecology areas.

Key words: Dwarf , Male-Sterile , Dwarf Male-Sterile Wheat , Breeding technology