The invention relates to the technical field of
crop breeding, and particularly discloses a wheat translocation
chromosome and a
molecular marker and application thereof, and the translocation
chromosome comprises a 1AS. 1AL-1DLDx5 + Dy10 translocation
chromosome formed by replacing a 475.8-598.6 Mb segment of a
long arm end of a 1A chromosome with a 376.6-498.6 Mb segment of a wheat 1D chromosome
long arm end. According to the invention, a 1AS.1AL-1DLDx5 + Dy10 translocation chromosome containing a Dx5 + Dy10 high-quality high-molecular-weight
glutenin subunit gene is created, and a matched
molecular marker is developed, so that the problems that in existing wheat breeding, excellent genes are lacked, specific translocation line identification depends on a time-consuming and labor-consuming cytological method, and high-
throughput application is difficult are solved; according to the method, a 1AS.1 1AL-1DLDx5 + Dy10 translocation chromosome carrier and a non-carrier are rapidly and accurately distinguished, traditional cytological identification is replaced,
molecular marker-assisted breeding is supported, and the breeding process of a new variety of high-quality wheat is accelerated.