矮变一号是西安市农业科学研究所从地方品种矮秆早中选出的矮秆基因突变体,株高仅25cm左右.该突变体的矮秆性呈显性遗传,其显性单基因Rht10位于4D染色体短臂上.在已知的矮秆基因中,Rht10矮秆基因的降秆作用最强,杂交后代向高矮两极分离,其育种价值尚未得到开发,但作为标记性状却十分理想.矮败小麦就是以该矮秆基因(Rht10)为标记的 Dwarf No.1 is a dwarf mutant with a height of only about 25cm, which was selected from the early dwarf varieties of local varieties by the Institute of Agricultural Sciences of Xi’an City. The dwarfity of the mutant was dominant and its dominant single gene Rht10 is located on the short arm of chromosome 4. Among the known dwarf genes, Rht10 dwarfing gene has the strongest desiccation effect and the progeny of hybrids are highly polarized. The breeding value of Rht10 has not been developed, but it is ideal as a marker. Dwarf wheat is the dwarf gene (Rht10) for the mark