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八倍体小滨麦与缺体小麦杂交和回交，其后代ＢＣ１Ｆ１与Ｆ２相比较，染色体分离范围小，有利于４１条染色体类型的分离，若用异源双单体附加作父本与缺体回交，４１条染色体类型的分离率还会提高２倍左右；单体代换在自交世代的传递率为３１．９１％，二体代换的分离率为１９．３７％，异染色体的丢失率为２９．３４％；二体代换在自交世代的传递率为８５．２６％，异染色体的丢失率为９．２１％；ＰＭＣＭＩ染色体构型为２０．７６”＋０．３１’＋０．０３＂＋０．０１””，相对紊乱系数为０．０１，２ｎ＝２１”的细胞占８６．０９％。选育的二体代换系，不同程度地表现出大穗、多花、优质、抗多种病害等滨麦的优良性状。
Compared with F2, the segregation of BC1F1 was smaller than that of F2, which was in favor of the segregation of 41 chromosome types. If the heteroduplex was used as the parent and the lack The backcrossing rate of 41 chromosomes was increased by about 2 times. The translocation rate of the haploid substitution in the selfing generation was 31.91%, the segregation rate of the two body substitution was 19.37% , The rate of loss of heterochromosome was 9.21%. The chromosome structure of PMCMI was 20.76 “+0.31” +0.03 “+0.01” “, the relative coefficient of turbulence was 0.01, and the number of 2n = 21” cells accounted for 86.09% .Selecting two-body substitution lines showed large spike, Excellent quality, anti-variety of diseases such as the excellent traits of barley.